Westlab 663-570 User manual

1
PRODUCT MANUAL
Product Manual
Westlab Bottle Top Dispensers
Codes 663-570, 663-571, 663-572, 663-573

2
PRODUCT MANUAL
1800 358 101
[e-mail]
www.westlab.com.au
[phone]
[e-mail]
www.westlab.co.nz
646 568 5391
[e-mail]
www.westlab.com
1 877 822 1455
[e-mail]
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1. Product Description
1.1 Introduction
Westlab’s Bottle Top Dispensers are for the effortless dispensing of liquid. Easy to clean
and maintain, the dispensers are fully autoclavable at 121°C. There are four bottle top
dispensers in the range covering a volume range of 0.5ml to 60ml.
The dispensers are calibrated in an accredited ISO 17025 laboratory according to
ISO 8655 standards. A calibration certicate is included inside the product package.
Additionally, a calibration tool is included for a quick in-lab recalibration.
1.2 Intended Use
The Bottle Top Dispenser is a general-purpose laboratory instrument intended for
use in laboratories for dispensing reagents and chemicals which are compatible
with the unit.
TABLE OF CONTENT
1. Product Description
1.1 Introduction
1.2 Intended Use
1.3 Features
1.4 Accessories
2. Technical Specications
3. Safety Precautions
4. 4. Maintenance &
Cleaning
5. Installation & Operation
6. Chemical Compatibility
7. Troubleshooting
8. Product Disposal
PRODUCT CODE
663-570
663-571
663-572
663-573
PLEASE READ THESE INSTRUCTIONS BEFORE USE.

3
PRODUCT MANUAL
1800 358 101
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[phone]
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1.3 Features
• Fully Autoclavable at 121°C
• Excellent Chemical Resistance
• Manufactured from PTFE, FEP, BSG & PP
• Recirculation Valve for Liquid Redirection
• Adjustable Delivery Nozzle for Flexibility
• Effortless PTFE Piston
• Jam-Free Operation
• 360° Adaptor
1.4 Accessories
Adaptors:
The Bottle Top Dispensers are supplied with ve adaptors that are suitable for most
laboratory reagent bottles.
The available sizes are 28mm, 32mm, 36mm, 40mm and 45mm.
Extendable Telescoping Tube:
A Telescoping Tube is provided as an inside-the-box accessory. Due to its adjustability,
the tube’s length can be extended to suit a variety of bottle heights to ensure you can
reach the bottom of the bottle.

4
PRODUCT MANUAL
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2. Technical Specications
Product Code 663-570 663-571 663-572 663-573
Volume Range 0.5 – 5ml 1 – 10ml 2.5 –
30ml
5 – 60ml
Increment 0.1ml 0.2ml 0.5ml 1.0ml
Accuracy % ± 0.600 ± 0.600 ± 0.600 ± 0.600
Accuracy ml ± 0.030 ± 0.060 ± 0.180 ± 0.360
CV % ± 0.200 ± 0.200 ± 0.200 ± 0.200
CV ml ± 0.010 ± 0.020 ± 0.060 ± 0.120
Vapour Pressure 500mbar
max.
500mbar
max.
500mbar
max.
500mbar
max.
Viscosity 500mm2/s
max.
500mm2/s
max.
500mm2/s
max.
500mm2/s
max.
Temperature 40°C max. 40°C max. 40°C max. 40°C max.
Density 2.2g/cm3
max.
2.2g/cm3
max.
2.2g/cm3
max.
2.2g/cm3
max.

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PRODUCT MANUAL
Change Volume Easily
A specially designed volume
adjustment knob that allows
180º rotation for easy and
effortless volume setting.
Move Effortlessly with a
PTFE Piston
A PTFE Piston with an ETP
O-Ring facilitates smooth and
effortless movement and ensures
high chemical compatibility.
Re-direct Liquids with
Recirculation Valve
Recirculation Valve prevents the
loss of reagents during purging by
re-directing them into the mounted
bottle and facilitates bubble free
dispensing
Operate Jam-free
Comes with an award-winning
technology, that facilitates
smooth and jam-free functioning.
Dispense Easily
An adjustable delivery nozzle.
It offers a high degree of exibility,
facilitating easy dispensing in
demanding laboratory conditions.
Work Flexibility with
a 360º Adapter
A specially designed Adapter
allows 360º rotation, facilitating
complete work exibility.
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PRODUCT MANUAL
1800 358 101
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[phone]
[e-mail]
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646 568 5391
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1 877 822 1455
[e-mail]
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Australia New Zealand United StatesCanada
3. Safety Precautions
The Bottle Top Dispensers may sometimes be used with hazardous materials,
operations, and equipment. It is beyond the scope of this manual to address all the
potential risks associated with its use in such applications. It is the responsibility of
the user of these dispensers to consult and establish appropriate safety and health
practice and determine
the applicability of regulatory limitations prior to use.
Please comply with the following safety instructions:
• Follow all general directions for hazard prevention and safety instructions e.g.,
wear protective clothing, eye protection and gloves.
• Observe all specications provided by the reagent manufacturers.
• When dispensing inammable media, avoid the build up of static charge. Do not
dispense into plastic vessels.
• Only use the unit for dispensing liquids with strict regard to the dened limitations
of use and operating limitations.
• Always use the instrument in a way that neither the user nor any other person is
endangered. When dispensing, the discharge tube must always point away from
the user or any other person. Avoid splashes. Only dispense into suitable vessels.
• Never press down on the piston when the discharge tube closure is attached.
• Never remove the discharge tube while the dispensing cylinder is lled.
• Never carry the mounted unit by the cylinder sleeve or the valve block. The breakage
or loosening of the cylinder may lead to personal injury from chemical exposure.
• Never use force on the dispensers. Use smooth, gentle movements to operate the
piston upwards and downwards. Only use the original accessories and spare parts.
• Do not wipe the unit with a dry cloth.
• Regularly clean the cap of the discharge tube to avoid reagent build up.
• Only use the original accessories and spare parts.
• Do not attempt to make any technical alterations. Do not dismantle the unit any
further than is described in this manual.
• Always check the unit for visual damage before use.
• If there is a sign of a potential malfunction, immediately stop dispensing.
• Store the Bottle Top Dispensers and accessories in a clean, cool, and dry place.
The recommend storage temperature is between -20°C and +50°C [-4°F to +122°F].
• This product cannot be used with hydrouoric acid or any chemical that attacks
glass. A chemical compatibility chart is provided in this manual for detailed
special conditions.
• Calibrations can be performed onsite by end user.

7
PRODUCT MANUAL
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4. Maintenance & Cleaning
The dispenser should be cleaned in the following situations:
• Immediately when the piston is dicult to move
• Before changing the reagent
• Prior to long term storage
• Prior to dismantling the unit
• Prior to autoclaving
• Prior to changing the valve
• Regularly when using liquids which form deposits [e.g. crystallising liquids]
• Regularly when liquids accumulate in the cap
All maintenance should be carried out wearing suitable eye protection and protective
clothing. If in doubt, consult your safety ocer.
Please follow the following precautions:
1. Ensure that the dispenser is completely empty.
2. Place the unit into an empty sink with its reservoir.
3. Unscrew the threaded platform base from the reservoir and lift the dispenser’s
intake tube carefully out of the reservoir, while tapping it against the reservoir’s
aperture to shake off any droplets from the intake tube.
4. Hold the dispenser nozzle over the aperture of the reservoir and apply gentle
piston strokes to return any contents into the reservoir.
5. Empty the dispenser completely and ush thoroughly with distilled water.
6. If the piston barrel is still not completely clean, disassemble the dispenser.
Disassembling and assembling the dispenser for cleaning
and servicing
Disassemble the piston
1. Pull the cap outwards to expose the calibration nut.

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PRODUCT MANUAL
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2. Unscrew the calibration nut with the help of the calibration tool to disassemble the
piston and shaft out of the main housing.
3. After unscrewing, pull out the shaft.
4. Rinse the piston and shaft with deionised water.

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PRODUCT MANUAL
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5. Clean the cylinder with a bottle brush. If necessary, carefully remove the deposits
at the edge of the glass cylinder.
6. Flush all the parts of the unit with deionised water.
7. Insert the piston completely into the cylinder and then reassemble the dispenser
using the calibration tool by screwing back the piston.

10
PRODUCT MANUAL
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8. Snap back the cap to complete the assembly.
Disassemble the delivery pipe
9. Unscrew the chuck nut and pull out the delivery pipe.
10. Clean the delivery pipe with deionised water.

11
PRODUCT MANUAL
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Reassemble the delivery pipe
11. Push the delivery pipe into the lower housing until it stops going in further.
12. Screw in the chuck nut to complete the assembly.
Autoclaving
The dispenser is autoclavable at 121°C [250°F] 1 bar absolute [15 psi] with a holding
time of at least 15 minutes.
NOTE: Only the piston needs to be removed for autoclaving the unit.
Disassembling for autoclaving
1. Pull the cap outwards to expose the calibration nut.
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PRODUCT MANUAL
2. Unscrew the calibration nut with the help of the calibration tool to disassemble the
piston and shaft out of the main housing.
3. After unscrewing, pull out the shaft.
4. This is the piston-shaft sub-assembly.
Autoclave the two sub-assemblies at 121°C and 15 psi pressure for 10 to 15 minutes.

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PRODUCT MANUAL
Reassembling after autoclaving
5. Insert the piston completely into the cylinder and then reassemble the unit by
screwing back the piston with the calibration tool.
6. Snap back the cap to complete the assembly.
7. The dispenser is now ready to use.
ATTENTION! Recalibration is mandatory after autoclaving the dispenser.

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PRODUCT MANUAL
5. Installation & Operation
The bottle top dispensers are designed for dispensing liquids directly from the
reservoir bottle. They are calibrated according to the requirements of the
DIN EN ISO 8655-5.
When the dispensers are correctly used, the dispensed liquid will only contact the
following chemically resistant materials:
• PTFE
• FEP
• Borosilicate glass
Limitations of use
Please observe the following physical limits:
• A temperature range from 15°C to 40°C [59°F to 104°F] for both the unit and reagent.
• A maximum vapour pressure of 600mbar. Above 300mbar, aspirate slowly to prevent
the liquid from boiling.
• A kinematic viscosity of 500mm² [dynamic viscosity mPas = kinematic viscosity
mm²/s x density g/cm³.
• A maximum density of 2.2g/cm³.
Operating limitations
• Liquids form deposits which may cause the piston dicult to move or cause
jamming e.g., crystallising solutions or concentrated alkaline solutions. If the piston
becomes dicult to move, the instrument should be cleaned immediately.
• When dispensing inammable media, avoid the build-up of static charge. Do not
dispense into plastic vessels. Do not wipe the units down with a dry cloth.
• The dispensers are designed for general laboratory applications and comply with
the relevant standards. The compatibility of the unit must be checked by the user.
The approvals for specic applications such as for production and administration of
food, pharmaceuticals and cosmetics are not available.
Operating exclusions
Never use with:
• Liquids attacking FEP, PFA and PTFE e.g. dissolved sodium azide
• Liquids attacking borosilicate glass e.g. hydrouoric acid
• Hydrochloric acid > 40% and nitric acid > 70%
• Tetrahydrofuran triuoroacetic acid
• Explosive liquids e.g. carbon disulde
• Suspensions e.g. charcoal, as solid particles may clog or damage the unit
• Dissolved sodium azide is only permitted up to a concentration of 0.1% max.
• Liquids attacking PP [cap]

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PRODUCT MANUAL
Setting the dispenser up
1. Adjust the length of the telescoping inlet tube. The length of the FEP inlet tubing
provided should be adjusted to t your particular reservoir.
2. Fix the telescoping tube.
3. Choose the correct adaptor for the bottle. The threaded platform base of the
dispenser has a 30mm screw thread.

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PRODUCT MANUAL
4. Fix the adaptor.
5. Mount the dispenser. The assembled dispenser is screwed to the reservoir using
gentle hand torque applied to the threaded platform base only. Removal should
also be by means of hand torque applied to the same base.
Do not operate the piston until the dispenser is safely and fully mounted on the
reservoir bottle.
Always wear protective gloves when touching the unit or the bottle, especially when
using dangerous liquids.
Never press down the piston when the cap is on. Avoid splashing the reagent.
The reagent can drip out from the discharge tube and cap.
Priming the dispenser
1. Open the cap of the dispensing tube. For safety, hold the discharge tube orice to
the inner wall of a suitable receiving vessel.

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PRODUCT MANUAL
2. Set the valve to ‘Recirculate.’
3. For priming, gently pull up the piston approximately 30mm and push it down
rapidly until the lower stop. Repeat this ve times.
4. Turn the valve to ‘Dispense.’ To avoid splashes when priming, hold the discharge
tube on the inner wall of a suitable receiving vessel and dispense liquid to prime
the discharge tube until it is bubble free.
5. Wipe away any remaining drops from the discharge tube.
NOTE: Before operating the unit for the rst time, ensure that it is rinsed carefully and
discard the rst few samples dispensed. Avoid splashing.

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PRODUCT MANUAL
Dispensing
Volume setting
The Volume Adjustment Knob is simple to operate – there are two positions of the knob:
• Position 1: Locked Position
• Position 2: Unlocked Position
To change the volume:
1. Turn the knob from Position 1 to Position 2 by rotating it anticlockwise.
The slider is now loose and can be moved up and down.
2. Set your desired volume by aligning the pointer with the scale.
3. To lock the set volume, turn the knob from Position 2 to Position 1
by rotating it clockwise.
NOTE: Over rotating the knob may lead to breakage.
Dispensing
1. Remove the cap from the discharge tube.
Pointer
Volume
Adjustment
knob
Slider

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PRODUCT MANUAL
2. When using the unit with the recirculation tube, turn the valve to dispensing
3. Hold the discharge tube orice on the inner wall of a suitable receiving vessel.
4. Gently lift the piston until the upper stop and then depress the piston slowly and
steadily with minimal force until the lower stop.
5. Wipe off the discharge tube against the inner wall of the receiving vessel.
Reattach the cap to the discharge tube.

•
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PRODUCT MANUAL
Calibration
Error limits
Error limits related to the nominal capacity [equals maximum volume] indicated on the
dispenser are obtained when the unit and distilled water are equilibrated at ambient
temperature [20°C/68°F]. Testing takes place according to DIN EN ISO 8655-6 with
a completely assembled unit and with uniform and smooth dispensing.
Volume
Range Increment
Specications – ISO 8655
Accuracy CV
± % ± ml ± % ± ml
0.25 – 2.5ml 0.05ml 0.6 0.015 0.2 0.005
0.5 – 5ml 0.1ml 0.6 0.030 0.2 0.010
1 – 10ml 0.2ml 0.6 0.060 0.2 0.020
2.5 – 30ml 0.5ml 0.6 0.180 0.2 0.060
5 – 60ml 1.0ml 0.6 0.360 0.2 0.120
10 – 100ml 2.0ml 0.6 0.600 0.2 0.200
User calibration procedure
The dispenser has been laboratory calibrated at its nominal value. However due to
changes in environmental conditions and the viscosity of the media being dispensed,
a gravimetric testing every three to twelve months is recommended. A gravimetric
testing per DIN EN ISO 8655-6 [for measurement conditions, see Error Limits] is
performed as follows:
Recalibration
1. Set the dispenser to the nominal volume or any other volume which is most used.
Follow the common rules for calibration used in statistical quality control [ISO 8655/2].
2. Set the volume and dispense ve full volumes of distilled water at 20°C on an
electronic balance to establish the actual mean volume of the dispensed liquid.
If the gravitational average result varies from the volume displayed, re-calibrate
the dispenser.