Savillex DST-1000 User manual

DST-1000
Acid Purification
System
User’s Manual

Savillex DST-1000 Acid Purification System
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1.0 Introduction................................................................................................................... 3
1.1 Purpose ............................................................................................................................................. 3
1.2 Liability Disclaimer............................................................................................................................. 3
1.3 Sub-Boiling Principle ......................................................................................................................... 3
2.0 Safety Information........................................................................................................ 3
2.1 Danger Categories and Signal Words ............................................................................................... 3
2.2 Qualified Users .................................................................................................................................. 4
2.3. Intended Use .................................................................................................................................... 4
2.4 General Safety Information ............................................................................................................... 4
2.5 Safety Shut-Off .................................................................................................................................. 5
2.6 Hazards Associated with Connections, Tubing and Containers ........................................................ 5
2.7 Electrical Hazards ............................................................................................................................. 6
2.8 Safety Labeling ................................................................................................................................. 6
3.0 About the DST-1000 Acid Purification System........................................................... 7
3.1 Visual Identification ........................................................................................................................... 7
3.2 Description ........................................................................................................................................ 7
3.3 Specifications .................................................................................................................................... 8
3.4 Unpacking and Inspection ................................................................................................................. 9
4.0 Preparation for Use .................................................................................................... 10
4.1 Recommended Environment ........................................................................................................... 10
4.2 Installation ....................................................................................................................................... 11
4.3 Starting Materials ............................................................................................................................ 13
4.4 Initial Cleaning ................................................................................................................................. 14
4.5 Cleaning of 1000 mL Purillex™ PFA Distillate Collection Bottle and Transfer Closure ................... 15
5.0 Operation..................................................................................................................... 15
5.1. Standard Operating Instructions ..................................................................................................... 16
5.2 Turn the Power ON ......................................................................................................................... 17
5.3 Refilling ........................................................................................................................................... 18
5.4 Changing Acid Types ...................................................................................................................... 18
6.0 Optional Operational Configuration.......................................................................... 18
6.1 Use of a Timer ................................................................................................................................. 18
6.2 Overnight Operation ........................................................................................................................ 18
7.0 Maintenance, Troubleshooting and Service............................................................. 19
7.1 Cleaning and Decontamination ....................................................................................................... 19
7.2 Troubleshooting .............................................................................................................................. 21
7.3 Repairs ............................................................................................................................................ 22
8.0 Appendix..................................................................................................................... 24
8.1 Warranty Statements....................................................................................................................... 24
8.2 Electrical Schematic ........................................................................................................................ 25
8.3 Declaration of CE Conformity .......................................................................................................... 26

Savillex DST-1000 Acid Purification System
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1.0 Introduction
1.1 Purpose
The Savillex DST-1000 Acid Purification System (DST-1000) is intended to provide a means of purifying acids
or water to a level suitable for use in highly sensitive analytical chemistry applications. The DST-1000 is
designed and manufactured to be as simple to use and safe to operate as possible.
This manual describes the Savillex DST-1000 and contains product specific information, current as of the date
of publication, for the safe use and operation of this equipment. Please read this manual carefully and
familiarize yourself with the DST-1000 prior to operating the equipment. Should you have any questions
regarding this product, or the contents within this manual, please contact Savillex.
Savillex Corporation
10321 West 70th St. Eden Prairie, MN USA
Phone: [phone] | Fax: [phone]
[e-mail] | www.savillex.com
1.2 Liability Disclaimer
Every effort has been made in the preparation of this publication to provide the user with the most current,
correct and clearly expressed information and instructions required for use and operation of the DST-1000.
Savillex Corporation assumes no liability or responsibility for damages resulting from errors, omissions and
accuracy of the information in this manual. The information included has been compiled from a variety of
sources and is subject to change without notification. Savillex Corporation makes no warranties or
representations regarding the quality, content, completeness, suitability, adequacy, sequence, accuracy, or
timeliness of such information. If you discover any errors or omissions we encourage you to contact Savillex
immediately.
We actively request your comments regarding improvements to this manual and the DST-1000 itself. We
reserve the right to make technical changes as deemed necessary.
1.3 Sub-Boiling Principle
The Savillex DST-1000 Acid Purification System uses sub-boiling distillation to produce high purity acid or
water from a PFA distillation unit (still). Sub-boiling distillation is a process in which a starting material is heated
to accelerate vaporization at a temperature well below its boiling point. This heating process gently vaporizes
the liquid without bubbling and the associated aerosol formation which can cause contamination of the
collected distillate. Sub-boiling distillation greatly eliminates aerosol formation and significantly improves the
purification process.
The DST-1000 allows the heated, clean, vaporized liquid to condense upon the cooler surface of the domed
section of the still. The pure condensate forms droplets, which collect and flow to the outlet port of the still.
The purified liquid distillate is then collected into a suitable container for later use in analyses.
2.0 Safety Information
2.1 Danger Categories and Signal Words
The signal words described below are used in connection with warnings throughout this manual. For your own
safety and to avoid property damage, please observe these warnings!
Signal words are highlighted in boldface and often accompanied by symbols denoting the hazard type.
Symbols and warnings are taken from the United Nations Globally Harmonized System of Classification and
Labeling of Chemicals.

Savillex DST-1000 Acid Purification System
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DANGER!
Denotes most severe hazards. Failure to follow safety instructions is likely to
cause severe personal injury, death or severe property damage.
WARNING!
Denotes less severe hazards. Failure to follow safety instructions may cause
severe personal injury, death or severe property damage.
This symbol indicates that this is important information regarding the product
or refers to a part of the manual that requires particular emphasis.
2.2 Qualified Users
This unit is intended as an experimental tool for research and development in the laboratory by qualified
analytical chemists. Only those individuals that have adequate technical training, knowledge and
demonstrated expertise should attempt operation of this unit. Observe all safety procedures and best
laboratory practices to assure safe operation. As in all laboratory operations, the user must assure that
adequate safety procedures are established to protect all personnel from the potential hazards in the use of
this product.
2.3. Intended Use
The DST-1000 is intended ONLY for use with the following materials:
Ultra-pure water (H2O)
≤ 70% nitric acid (HNO3)
≤ 37% hydrochloric acid (HCl)
≤ 51% hydrofluoric acid (HF)
DANGER! The DST-1000 is not approved for use with any other material. Using the DST-1000 with any other
material may result in personal injury or property damage. Please observe all appropriate regulations
published by government agencies, professional associations, chemical manufacturers and other regulating
bodies when working with chemicals.
2.4 General Safety Information
Purification of acids by sub-boiling distillation requires safety precautions beyond those of general laboratory
practices. The following safety information should be read carefully prior to using the DST-1000, and should
be observed at all times during the use and operation of the still.
Savillex assumes no liability for injury or damages resulting from improper handling or a failure to comply with
this information.

Savillex DST-1000 Acid Purification System
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Explosive; Fire, Blast or Projection Hazard
Electrics may ignite flammable or explosive mixtures. The apparatus is not designed for organic
chemicals. Improper use of the DST-1000 with organic material may cause personal injury or
property damage.
Causes Severe Skin Burns and Eye Damage
Take appropriate precautions during filling with and dispensing of acid. In case of contact, flush
with copious quantities of water. See reagent manufacturer’s material safety data sheet (MSDS)
for safe handling instructions.
Personal Protective Equipment
Wear recommended safety apparel when handling or working with acids.
Harmful lf Inhaled
Avoid inhalation of acid vapors.
Causes Serious Eye Irritation
Wear eye protection.
Ensure the system is in a properly functioning controlled environment (e.g. fume hood). Acid
vapor is emitted from the DST-1000 during use.
The Unit Employs High Voltage!
The DST-1000 must be connected to a grounded conductor. Connect the power cord of the
control box to a grounded power source.
Chemical Hazard!
Chemical hazards associated with the connections, tubing and containers are identical to those
noted above.
No Serviceable Parts! Do not attempt to alter or repair this unit. This instruction manual does
not include repair instructions. Contact Savillex or its local agent for service. Do Not Attempt to
Open the DST-1000 Reservoir/Condenser Assembly! The DST-1000 is not designed to be
opened and has no parts inside the reservoir/condenser assembly. Attempting to separate the
reservoir and condenser will destroy the unit.
2.5 Safety Shut-Off
If the system shows signs of damage or fails to function, turn the control knob to the OFF position and unplug
the power control box from the electrical outlet. Place an “Out of Order” sign on the still and separate and store
the power control unit to prevent accidental use. Indicator signs include:
• Visible signs of damage/leakage
• Loose components (other than tubing and ferrule nuts) are discovered
• The DST-1000 fails to operate
Contact Savillex or its local representative for service. See section 7.2 Troubleshooting.
2.6 Hazards Associated with Connections, Tubing and Containers
DANGER! Fittings, valves, tubing, vent membranes and collection containers associated with distillate or
waste collection may contain hazardous chemicals or residue.
Extreme caution should be taken when handling or replacing these items to avoid bodily contact, splashing, or
spilling. Appropriate personal protective equipment should be worn to avoid skin and eye contact.

Savillex DST-1000 Acid Purification System
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2.7 Electrical Hazards
DANGER! The DST-1000 utilizes high voltage electrical power to control the internal heating device. Repair
and servicing of this equipment must only be performed by trained and qualified electrical personnel. Proper
safety precautions and procedures must always be observed.
The Unit Employs High Voltage!
The DST-1000 must be connected to a grounded conductor. Connect the power cord of the
control box to a grounded power source.
Electrical Hazard!
High voltage is present at the electrical receptacle connector on the control box when
energized. Use CAUTION.
• Always de-energize and remove from the power source before any electrical servicing
• The power cord must only be connected to a wall outlet that is equipped with a
separate grounded connection
• Never replace the power cord. In case of damage return to Savillex for replacement
• Should fuse replacement be necessary, use only 1.0 Amp 250V 3AB fast-acting
ceramic body style
• Never energize with the control box cover removed
• Never operate in a wet, damp or spray down environment
• Never energize if the power cords have been damaged, frayed, corroded or wires
exposed
• Use extreme caution if the heater cable connector is unplugged from the receptacle on
the control box. High voltage is present when energized
2.8 Safety Labeling
The DST-1000 is designed with safety as a primary consideration. In addition to safety information in this
manual, Savillex has labeled and marked the unit to identify model number, operating voltage, wattage,
frequency, serial number and certification authority.

Savillex DST-1000 Acid Purification System
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3.0 About the DST-1000 Acid Purification System
3.1 Visual Identification
3.2 Description
The DST-1000 is intended for purification of reagent grade acids or water. The main sections of the still are
the reservoir and condenser which are molded from PFA. PFA construction minimizes the contamination
potential from extractable compounds and also allows for distillation of hydrofluoric acid. Note: THE STILL
ASSEMBLY CANNOT BE OPENED.
Acid is added to the unit via a front fill tube which also acts as gauge to show the amount of acid remaining in
the still. The large domed PFA condenser operates on the principle of differential temperature between
ambient air and the heated solution in the reservoir. There is no need for chilled water baths or re-circulating
coolant.
Heat is transferred to the reservoir via a silicone rubber heating jacket with an embedded low wattage
resistance heating element. This design provides efficient heat transfer while reducing electrical hazard. The
heater is designed so that heating the still at maximum power will not damage the unit even if the still is
operated until dry (avoid operating the still in this manner). The heating jacket also has a thermal fuse to
disable the heater to further protect against overheating.
The heating jacket is operated by a remote power control unit which should be located away from the DST-
1000 and outside of the fume hood. The power control unit is powered by alternating current voltages of 100
VAC, 115 VAC or 230 VAC, specific to local markets and geographic locations. The power cable to the still is
sheathed in silicone coated fiberglass to increase the chemical resistance, and the power cable connector is
electrically keyed to prevent the mis-application of voltage. The approximate load is 70 watts. The power
setting is adjustable, and allows for an operating distillation temperature of 50-90ºC. Operating temperatures
may vary with the liquid volume in the reservoir, and the temperature of the operating environment.
When the acid is heated to sub-boiling temperatures, high purity acid vapor is produced, which condenses on
the inside of the vessel, runs down the side walls into a collection channel, and flows through a tube into the
collection bottle.
Fig.1

Savillex DST-1000 Acid Purification System
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3.3 Specifications
Power Source (three-wire earth grounded only)
#525-1000-100 100 VAC +/- 5%, 50/60 Hz
#525-1000-115 115 VAC +/- 5%, 50/60 Hz
#525-1000-230 230 VAC +/- 5%, 50/60 Hz
#525-1000-230UK UK 3-pin fused plug 230 VAC +/- 5%, 50/60 Hz
Power 70 Watts (resistance heater)
Shipping Weight 7.25 kilograms/16 pounds
Dimensions
Still with bottle bracket 36.5 cm x 20 cm (L x W)
Height 45.0 cm
Power cord 3 meters (still to control unit)
2 meters (control unit to grounded outlet)
Installed Location Distillation unit within chemical fume hood
Reservoir Capacity 1000 mL
Materials
Still Reservoir and condenser PFA
Purillex 1000 mL PFA collection bottle PFA
Fill Tube Assembly PFA
Tubing and fittings PFA
Heating jacket Silicone rubber
Stand and bottle bracket Polypropylene
Power control ABS housing
Cable to still Silicone rubber sheathed
Ambient Temperature +21°C ±10 (70°F ±18)
Distillation Temperature Approximately 50°to 90°C (adjustable)
Warm-up Time 2-3 hours (depending on fill volume)
Over Temperature Protection Provided
Cooling Water Not required
Approx. Distillation Rate (after warm-up) 50 mL/hr @ 90°C for water
30 mL/hr @ 80°C for water
10 mL/hr @ 60°C for water

Savillex DST-1000 Acid Purification System
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3.4 Unpacking and Inspection
Open the shipping carton and remove all still components. Check the components against the following
packing list and inspect for shipping damage such as cracks, scratches, dents, etc. Should any components
be missing or damaged, contact your local representative or Savillex. We recommend retaining all packaging
until it is determined that the equipment is functioning properly.
For safety reasons, never operate the unit if it exhibits visible signs of damage.
If the shipping carton and contents are damaged, retain the packaging for inspection by the freight
company. Notify your representative or Savillex for assistance in filing an insurance claim.
Packing list for the Savillex DST-1000 Acid Purification System
(1) Still assembly, PFA reservoir/condenser and stand
(1) Heating assembly with power cord
(1) 1000 mL Purillex™ PFA collection bottle
(1) Graduated fill tube and bottle bracket
(1) GL45 transfer closure with (2) ¼” tube outlets with vent nut
(4) Base legs
(1) PFA distillate tubing, ¼” OD x 22 cm long
(1) PFA drain tubing, ¼” OD x 90 cm long
(1) Fill tube connector tubing 3/8”OD x 19.3 cm long
(2) PFA ¼” OD ferrule nut
(10) Replacement 9 mm PTFE filters for bottle vent
(10) Replacement 25 mm PTFE filters for filter vent
(1) PFA/PTFE stopcock drain valve
(1) Power control unit for heating assembly
(for appropriate local VAC power)
(1) DST-1000 Acid Purification System user’s manual (CD)
Note:
The DST-1000 was shipped with PFA cap plugs on the (1) DISTILLATE port and (1) TEE FITTING DRAIN
port. The top vent on the still condenser was also fitted with a 25 mm PTFE filter membrane. Confirm that all
of these components are in place.

Savillex DST-1000 Acid Purification System
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4.0 Preparation for Use
4.1 Recommended Environment
The DST-1000 should ONLY be operated under an acid fume hood. Although the liquid will remain fully
contained within the vessel, small amounts of acidic vapors will be released through the breather vents. It is
strongly recommended that DST-1000 be used in a fume hood dedicated to acid purification only. The DST-
1000 should not be operated with other sample preparation activities which generate acidic fumes which can
damage the DST-1000 heating element. The DST-1000 should not be operated or used with potentially
flammable, explosive or contaminating materials. The unit is not rated for use in areas requiring intrinsic
safety, explosion proof or any areas that may contain flammable or explosive materials. Please observe all
appropriate regulations published by government agencies, professional associations, chemical manufacturers
and other regulating bodies.
The DST-1000 power control unit is intended for installation outside the fume hood, with the 3 meter power
cable passing through a designated port in the hood to the heating jacket connection.
The following additional conditions are recommended for the environment
Emissions
Operate DST-1000 in fume hood with vent caps and membranes in
place.
Ambient
Temperature
+21°C ±10 (70°F ±18)
Note: The temperature of the environment may affect the rate of
distillation and the quality of the distillate.
Relative Humidity
< 85% - High humidity is not good for electrical parts. DO NOT operate
the still in wet or wash down conditions.
Space
Requirements
The footprint of the DST-1000 stand is 20cm x 20cm x 45cm high.
Space should also be allocated for bottle bracket and 1000 mL PFA
collection bottle.
Power Source
The power control unit is shipped in a configuration suitable for standard
local AC wall outlet power.
100 VAC +/- 5%, 50/60 Hz
115 VAC +/- 5%, 50/60 Hz
230 VAC +/- 5%, 50/60 Hz
Verify that the power source voltage falls within the range given above. If not, contact your local representative
or Savillex for advice.

Savillex DST-1000 Acid Purification System
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4.2 Installation
Explosive; Fire, Blast or Projection Hazard
Electrics may ignite flammable or explosive mixtures.
The apparatus is not designed for organic chemicals. Improper use of the DST-1000 with
organic material may cause personal injury or property damage.
Causes Severe Skin Burns and Eye Damage
Take appropriate precautions during filling with and dispensing of acid. In case of contact,
flush with copious quantities of water. See reagent manufacturer’s material safety data sheet
(MSDS) for safe handling instructions.
Personal Protective Equipment
Wear recommended safety apparel when handling or working with acids.
Harmful lf Inhaled
Avoid inhalation of acid vapors.
Causes Serious Eye Irritation
Wear eye protection.
Ensure the system is in a properly functioning controlled environment (e.g. fume hood). Acid
vapor is emitted from the DST-1000 Acid Purification System during use.
The Unit Employs High Voltage!
The DST-1000 must be connected to a grounded conductor. Connect the power cord of the
control box to a grounded power source.
Chemical Hazard!
Chemical hazards associated with the connections, tubing and containers are identical to
those noted above.
Place the DST-1000 on a solid surface under an acid fume hood. It is strongly recommended that the fume
hood be dedicated to acid purification only, and not used for other sample preparation activities which generate
acidic fumes. See section 4.1 Recommended Environment.
a) Lay the DST-1000 unit on its side and screw the (4) base legs onto the bottom plate. Stand the
unit upright.
b) Optional: Place a spill containment tray of suitable material under the still. The tray should have a
minimum capacity of 1000 mL. A spill tray is available as an accessory from Savillex (#730-0525).
c) Run the 3 meter power cord from the distillation unit to outside the fume hood
d) Connect the power cord from the distillation unit to the power control unit.
Note: The electrical connector is keyed to the appropriate voltage.
e) Place the power control unit within 2 meters of an appropriately rated voltage and grounded outlet.
Plug the power cord into the outlet but do not turn power ON at this time. See Section 3.3
Specifications.

Savillex DST-1000 Acid Purification System
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Fig. 2
f) Verify that the top 25 mm filter vent assembly fitting has a PTFE membrane installed and is secure.
See Fig. 2 exploded filter vent assembly drawing
g) Remove the ¼” OD ferrule cap from the bottom tee fitting in the fill tube and save for future use
h) Take one of the ¼” OD ferrule nuts supplied and slide it on to the 90cm long waste drain tubing
i) Insert one end of the tubing into the remaining opening in the tee fitting in the bottom of the fill tube
assembly (It should be facing away from the DST-1000 unit), slide the ferrule nut up to the fitting
and finger tighten. Pull slightly on the tubing to make sure the tubing will not accidentally pull out
during use. Note: The OD groove on the tubing will catch on the ferrule nut preventing pullout.
j) Insert the other end of the drain tubing into the stopcock valve provided and finger tighten the
ferrule nut. Turn the valve to the CLOSED position. Should you wish to shorten the drain tubing
simply cut the tubing off square at the desired length, install the stopcock valve and turn it to the
CLOSED position. Note: If the tubing is shortened, the section with the OD groove will be lost.
Grooving the tubing is not necessary for a leak proof connection, but is a safety measure to
prevent accidentally pulling the tube out of the connection. If you wish to groove the tubing contact
Savillex and order ¼” groove tool (#730-0004).
Blue Clamp Ring
White Clamp Ring
Top Filter Body
25 mm PTFE Filter
Membrane
(#740-450-25-3)
Lower Filter Body
25 mm Filter Membrane Replacement Instructions
1. Grasp blue clamp ring while turning white clamp ring
counter-clockwise to loosen
2. Remove white clamp ring and top filter body
3. Replace with new filter membrane being careful that membrane sits
flat without wrinkles
4. Snap top filter body back in place by first aligning tabs with lower
filter body
5. Finger-tighten by holding blue clamp ring and threading white clamp
ring clockwise

Savillex DST-1000 Acid Purification System
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k) If desired, install an additional length of tubing to the other port on the stop cock valve and run it to
a waste collection container of suitable material.
l) Test the power control unit by turning the control knob on the power control unit to the “HI”
temperature setting. The red heater light should illuminate. If heater light does not illuminate,
contact Savillex or your local representative.
m) Turn the control knob back to the OFF position. You are now ready to clean the DST-1000.
(Section 4.4)
4.3 Starting Materials
To obtain ultrapure acid with 10 ppt or less elemental impurities, a high quality starting acid is required for
distillation. Trace metals grade acid (acid with 1 ppb or less elemental impurities) will typically yield acid that is
equivalent to commercial grade ultrapure acid (10 ppt) in a single distillation. Starting acids with higher levels
of impurities, such as reagent grade acids, will produce poorer quality distillate and may require multiple
distillations to achieve acid that is equivalent to ultrapure acid quality. Even with multiple distillations, poorer
quality starting acids may not produce acid that is equivalent to ultrapure acids.
Acid Commonly Used Concentrations Azeotropic Concentration with H2O
HNO367-70% 68%
HCl 33-37% 20.2%
HF 47-51% 37%
Note: Regarding Acid Purification
The final concentration of acid produced by the DST-1000 will likely be different from the concentration of the
starting material used. The change in concentration is due to the azeotropic nature of the acids (see table
above).
If starting material acid used for distillation has a concentration that is higher than the azeotropic concentration,
the concentration of the acid produced will be lower (closer) to the azeotropic concentration after distillation.
The concentration difference is most notable during distillation of HCI which is most often sold at a commercial
concentration of 35% and has an azeotrope concentration of 20%. The concentration difference will often
produce excess HCl vapor during the distillation process. To minimize the acidic vapor produced, concentrated
HCI can be diluted to a concentration closer to the azeotrope prior to distillation.

Savillex DST-1000 Acid Purification System
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4.4 Initial Cleaning
The DST-1000 is constructed of the ultimate material for acid purification. All wetted parts within the still
reservoir/condenser are made of PFA. PFA is well known to provide the highest level of chemical resistance
and lowest level of ionic contamination. To achieve these benefits, an initial cleaning procedure is required to
extract any contaminates from the wetted surfaces within the still left after manufacturing. Savillex
recommends the following cleaning procedure prior to using the unit for high purity acid distillation. It is also
recommended that the DST-1000 be dedicated to a single chemistry to achieve the highest levels of purity.
a) Check to make sure that the ¼” OD ferrule plug on the distillate output port is finger tight
b) Verify that the waste drain fittings are secure and that the drain stopcock valve is CLOSED
c) The unit is now ready for initial filling. It is recommended that the initial starting material for cleaning be
the same type and grade of chemical that you are intending to distill and purify. See section 4.3;
Starting Materials.
d) Unscrew and remove the threaded cap from the graduated filling tube
e) Carefully and slowly pour the chemical into the filling tube. DO NOT FILL TOO QUICKLY as you will
notice the chemical drains slowly into the reservoir. The fill tube has graduation marks indicating liquid
level in the reservoir.
Note: Should spilling occur, immediately follow spill and safety protocols. See section 7.1 for details.
f) Continue filling until a liquid level of approximately 500 mL has been reached. You can monitor the
liquid level by observing the graduation marks on the fill tube.
g) Replace the threaded cap on the fill tube and turn clockwise until hand tight
h) The unit is now ready for cleaning. Turn the control knob on the power control unit to the HI setting.
Explosive; Fire, Blast or Projection Hazard
Electrics may ignite flammable or explosive mixtures. The apparatus is not designed for
organic chemicals. Improper use of the DST-1000 with organic material may cause personal
injury or property damage.
Causes Severe Skin Burns and Eye Damage
Take appropriate precautions during filling with and dispensing of acid. In case of contact,
flush with copious quantities of water. See reagent manufacturer’s material safety data sheet
(MSDS) for safe handling instructions.
Personal Protective Equipment
Wear recommended safety apparel when handling or working with acids.
Harmful lf Inhaled
Avoid inhalation of acid vapors.
Causes Serious Eye Irritation
Wear eye protection. Ensure the system is in a properly functioning controlled environment
(e.g. fume hood). Acid vapor is emitted from the DST-1000 during use.
The Unit Employs High Voltage!
The DST-1000 must be connected to a grounded conductor. Connect the power cord of the
control box to a grounded power source.
Chemical Hazard!
Chemical hazards associated with the connections, tubing and containers are identical to
those noted above.

Savillex DST-1000 Acid Purification System
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i) The lower section of the PFA vessel will now gently heat to 80°- 90°C. It will take 2-3 hours to reach
this temperature.
j) Allow the still to operate on the HI setting for the next 48 hours. The acid inside the vessel will
continually reflux during this time which will clean the entire inside surfaces.
k) Turn the control knob to the OFF position and allow the DST-1000 to cool
l) Drain the contents of the unit by opening the stopcock drain valve and directing the contents into an
appropriate waste container. Close the drain valve after emptying.
m) The remaining distillate (approximately 50 mL) in the collection channel inside the vessel will also need
to be drained. Carefully tilt the unit backwards so the distillate outlet is angled upwards and the
distillate has drained away from the opening.
n) Remove the ¼” OD ferrule plug from the distillate outlet. Slide the ¼” OD ferrule nut onto the 22 cm
long distillate tubing and insert the grooved end into the outlet fitting. Finger-tighten the ferrule nut.
o) After the tube is attached, level the unit and drain any remaining distillate into a waste container
p) Remove the 22 cm distillate tubing and set aside for future use. Re-close the port with the ¼” OD
ferrule plug.
q) Repeat the above cleaning procedure using high purity de-ionized water
r) Completely drain the unit and close all ports. The unit is now ready for use.
4.5 Cleaning of 1000 mL Purillex™ PFA Distillate Collection Bottle and Transfer
Closure
Cleaning and preparation of the 1000 mL distillate collection bottle is as important as cleaning and preparation
of the DST-1000 acid purification system. Although Purillex bottles are manufactured and bagged inside a
cleanroom, for ultratrace (low ppt level) metals use, such as the collection and storage of high purity acids, they
should be thoroughly cleaned prior to their first use.
You are welcome to follow the established methods and protocols within your laboratory for cleaning PFA
labware products prior to use. In addition, a guideline for cleaning the bottles prior to use is provided in the
steps below.
a) Rinse the bottle thoroughly with Deionized Water (DIW)
b) Fill with a solution of 2% high purity HNO3 /1% high purity HF and replace the closure
c) Store bottle at 50°C for a minimum of 48 hours
d) Empty the bottle and rinse thoroughly with DIW
e) Repeat steps b-d
f) Bottle is now ready for ultratrace use
If HF cannot be used, use HN03 alone.
The accompanying GL45 Transfer closure should also be thoroughly cleaned. It is recommended to soak the
transfer closure in a dilute acid solution (2% HNO3) that is heated to approximately 90°C for a minimum of 48
hours to remove contaminants. After soaking, rinse the closures using DIW.

Savillex DST-1000 Acid Purification System
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5.0 Operation
5.1. Standard Operating Instructions
Explosive; Fire, Blast or Projection Hazard
Electrics may ignite flammable or explosive mixtures. The apparatus is not designed for
organic chemicals. Improper use of the DST-1000 with organic material may cause personal
injury or property damage.
Causes Severe Skin Burns and Eye Damage
Take appropriate precautions during filling with and dispensing of acid. In case of contact,
flush with copious quantities of water. See reagent manufacturer’s material safety data sheet
(MSDS) for safe handling instructions.
Personal Protective Equipment
Wear recommended safety apparel when handling or working with acids.
Harmful lf Inhaled
Avoid inhalation of acid vapors.
Causes Serious Eye Irritation
Wear eye protection. Ensure the system is in a properly functioning controlled environment
(e.g. fume hood). Acid vapor is emitted from the DST-1000 during use.
The Unit Employs High Voltage!
The DST-1000 must be connected to a grounded conductor. Connect the power cord of the
control box to a grounded power source.
Chemical Hazard!
Chemical hazards associated with the connections, tubing and containers are identical to
those noted above.
The DST-1000 will produce a reliable supply of highly purified acid once the cleaning operation has been
completed. To achieve the highest level of purity, Savillex recommends using the still for only one type of acid.
DANGER! NEVER MIX CHEMICALS WITHIN THE STILL
a) Replace the top vent fitting with a fresh 25 mm filter membrane. See Fig. 2
b) Remove the ¼” OD ferrule plug from the distillate outlet
c) Remove the standard threaded closure from the 1000 mL collection bottle and replace with the
included GL45 transfer closure
d) Slide the ¼” OD ferrule on to the 22 cm long distillate tubing and insert the grooved end into the
outlet fitting. Finger-tighten the ferrule nut.
e) Connect the other end of the 22 cm distillate tubing to the ported closure of the 1000 mL PFA
collection bottle. NOTE: The closure must be vented to permit sealed filling. See Fig. 3
Fig. 3
PTFE Membrane (Part #450-09-3)
GL45 Transfer Closure
(# 600-045-46)

Savillex DST-1000 Acid Purification System
- 17 -
Distillate tubing should be no longer than 16 cm to allow proper draining of distillate into collection
bottle. Make sure tubing is sloped downward toward collection bottle to allow continuous flow.
Position the distillate collection bottle into the bottle bracket to prevent tipping and spillage during
use. See section 4.2 for proper instillation of the bottle bracket.
f) Verify that the waste drain fittings are secure and that the drain stopcock valve is CLOSED
g) Remove the threaded cap from the graduated filling tube
h) Carefully and slowly pour the chemical into the filling tube. DO NOT FILL TOO QUICKLY as you
will notice the liquid drains slowly into the reservoir.
Should spilling occur, immediately follow spill and safety protocols. See section 7.1 for details.
i) Fill to the desired volume, but DO NOT EXCEED 1000 mL of chemical. You can quickly and
easily check liquid volume level by observing the graduation marks on the fill tube.
j) Replace the threaded cap on the fill tube and hand-tighten
5.2 Turn the Power ON
a) The DST-1000 is now ready for distillation. Turn the control knob to the desired setting.
Approximate distillation rates for water are listed below:
HI 80°C (176°F) to 90°C (194°F) 50 mL/hr
MID 70°C (158°F) to 80°C (176°F) 30 mL/hr
LO 50°C (122°F) to 60°C (140°F) 10 mL/hr
The HI setting will produce high purity 10 ppt grade acid. The LO and MID settings are useful for
reducing the distillation rate during prolonged unattended operation of the DST-1000 to prevent the
unit from running to dryness.
b) The reservoir of the PFA vessel will now begin gently heating to the desired setting. It will take
2-3 hours to reach this temperature.
c) As the internal chemical temperature rises, evaporation and condensation rates will increase.
The purified chemical distillate will collect within the DST-1000 and begin to flow into the distillate
collection bottle.
d) As the purified distillate collects, the contents of the PFA reservoir are being depleted. It is
recommended that you never allow the reservoir to run dry. A minimum of 100 mL should
always be maintained to prevent the drying of impurities onto the inside surface of the reservoir.
If the DST-1000 runs dry, impurities will be deposited onto the inside surface of the reservoir.
Introduction of acid will re-dissolve these impurities, and may reduce the quality of the distillate for a
period of time. The DST-1000 will not be damaged.

Savillex DST-1000 Acid Purification System
- 18 -
5.3 Refilling
a) Monitor acid level in the reservoir during operation using the graduation marks on the fill tube. The
DST-1000 may produce up to 50 mL per hour varying with the type of starting material and
environmental temperature.
b) Remove the threaded cap from the graduated filling tube
Remove the threaded cap from graduated filling tube slowly to alleviate any internal pressure that may
have occurred during distillation process. The observed liquid level in the filling tube may change as the
pressure reaches equilibrium
c) Carefully and slowly pour the chemical into the filling tube. DO NOT FILL TOO QUICKLY as you will
notice the liquid drains slowly into the reservoir.
Should spilling occur, immediately follow spill and safety protocols. See section 7.1 for details.
d) Fill to the desired volume. DO NOT EXCEED 1000 mL OF ACID. You can check liquid volume by
observing the graduation marks on the fill tube.
e) Replace the threaded cap on the graduated fill tube and hand-tighten
5.4 Changing Acid Types
Savillex recommends the DST-1000 be dedicated to a single distillation chemistry to obtain the highest purity
acid. If you wish to change the acid distillation from one type of acid to another type of acid (e.g. change from
HNO3 to HCl) you should follow the steps outlined below:
a) Make sure the collection channel is empty after you finish the distillation. This is accomplished by
tipping the DST unit toward the collection vessel so the distillate remaining in the channel is
completely removed.
b) Replace all PTFE vent membranes
c) Inspect all connections for trace amounts of acid that could be left in the threads or tubing
d) Check to see that the reservoir is completely drained before adding any new material to the DST-
1000
To help clean up the unit faster, do a series of quicker deionized water distillations rather than a single
day-long distillation. Fill with deionized water, distill for a few hours (or overnight), empty and discard the
water, refill with deionized water and repeat the process several times.
6.0 Optional Operational Configuration
6.1 Use of a Timer
The still may be operated via any commercially available timer control unit used for operation of electrical
appliances.
6.2 Overnight Operation
The DST-1000 may safely run overnight. Be aware of the production rate of your specific starting
material, and choose the appropriate operating setting (LO, MID, HI) to control the rate of distillation. At
50 mL/hour, an 18 hour distillation will produce 900 mL of distillate. It is recommended that you do not
allow the DST-1000 to operate until dry.

Savillex DST-1000 Acid Purification System
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7.0 Maintenance, Troubleshooting and Service
7.1 Cleaning and Decontamination
Explosive; Fire, Blast or Projection Hazard
Electrics may ignite flammable or explosive mixtures.
The apparatus is not designed for organic chemicals. Improper use of the DST-1000 with
organic material may cause personal injury or property damage.
Causes Severe Skin Burns and Eye Damage
Take appropriate precautions during filling with and dispensing of acid. In case of contact,
flush with copious quantities of water. See reagent manufacturer’s material safety data sheet
(MSDS) for safe handling instructions.
Personal Protective Equipment
Wear recommended safety apparel when handling or working with acids.
Harmful lf Inhaled
Avoid inhalation of acid vapors.
Causes Serious Eye Irritation
Wear eye protection.
Ensure the system is in a properly functioning controlled environment (e.g. fume hood). Acid
vapor is emitted from the DST-1000 during use.
The Unit Employs High Voltage!
The DST-1000 must be connected to a grounded conductor. Connect the power cord of the
control box to a grounded power source.
Chemical Hazard!
Chemical hazards associated with the connections, tubing and containers are identical to
those noted above.
The DST-1000 requires little maintenance to provide a reliable means of producing highly purified acid on a
regular basis. The few simple tasks listed below will keep the unit maintained and ensure that the DST-1000 is
ready for the next distillation.
• Keep the unit clean and free from potential contaminates. The exterior of DST-1000 unit should be
cleaned using a damp cloth and a mild cleansing agent suitable for the laboratory environment, such
as dilute Micro-90. Gently wipe down the exterior of the unit. DO NOT immerse the DST-1000 unit,
power control box, or heating assembly in water or any other cleaning agent.Do not spray the
unit with water to clean the exterior. Store the unit in a clean, dry area when not in use, preferably a
chemical fume hood.
• Should acid be spilled on the exterior of the DST-1000 unit during filling, or at any other time,
immediately follow the proper cleaning and safety protocols in place at your facility for acid spills.
These protocols should, at a minimum, include:
o Containment of the acid spill
o Neutralization of the acid spill using neutralizing liquids, solids or gels such as “Spill-X”
o Clean-up and proper disposal of the neutralized spill in accordance with local, state and federal
regulations
o Final rinse and clean of the affected area with an approved cleaning solution
Take special care to avoid spillage while filling the DST-1000. Acid spilled on the DST while
filling has the potential to contact the heating element which may damage the heating element
resulting in failure of the element.

Savillex DST-1000 Acid Purification System
- 20 -
• After every 40 hours of use, it is recommended to replace all filter membranes to assure optimal
operation. See Fig.2 & Fig.3
• For best results, the DST-1000 should be completely drained of waste acid or water after every
distillation to remove the highly concentrated contaminants that have accumulated in the reservoir. If
scale deposits occur on the interior of the reservoir, a simple cleansing reflux/rinse with hydrochloric
acid should remove these scale deposits. Begin by completely draining the unit and follow the initial
cleaning steps in Section 4.4 to dissolve any buildup of scale inside the reservoir. Once the scale has
been dissolved, drain the HCl rinsate into an appropriate waste container. After this cleaning
procedure, the DST-1000 is ready for use.
• Should you wish to decontaminate the interior of the unit, start by:
o Completely draining all chemical contents as described in Section 4.4
o Fill with a maximum of 1000 mL of high purity deionized water
o Set the power control unit on “HI” and allow to reflux for a minimum of 48 hours
o Turn the power control OFF and allow the unit to cool
o Completely drain the contents
o Repeat this process two additional times
o Plug all ports for unit storage or transfer
The wetted parts of the DST-1000 are manufactured of 100% PFA which is highly chemical resistant. The
support stand of the still is manufactured of polypropylene, which may stain or become slightly discolored upon
contact with acid. Also, extreme or prolonged exposure to liquid acid may damage the polypropylene
components of the DST-1000. Should the polypropylene components of the still be exposed to liquid acid for
a prolonged period of time, Savillex recommends replacing the affected polypropylene components.
Replacement parts are available from Savillex. If the cordage, power control box or heating assembly is
damaged by exposure to liquid acid, do not attempt to operate the DST-1000. Contact Savillex for
replacement or repair of these items.