VWR AVANTOR E-BURETTE User manual

Instruction Manual
VWR® E-BURETTE
Motor Operated Burette
with 3 Calibrated Pre-set Speeds
EU cat. no 613-7002
Version 01 Issue 03/2022
NA cat. no 76319-574
76319-576

2 vwr.com I Instruction manual VWR® E-Burette
Legal address of Manufacturer
Europe
VWR International bv,
Researchpark Haasrode 2020
Geldenaaksebaan 464 B-3001 Leuven
[phone]
be.vwr.com
UK Importer
VWR International Ltd
Hunter Boulevard, Magna Park
Lutterworth, Leicestershire, LE17 4XN
uk.vwr.com
United States
VWR International LLC
100 Matsonford Rd
Radnor, PA 19087
[phone]
www.vwr.com
Country of Origin
India
EN
Instruction Manual
01 - 33
DE
Bedienungsanleitung
34 - 66
FR
Mode d’emploi
67 - 99
Table of Contents

Contents
Safety information
Package contents
Unpacking
Installation
Intended use
Symbols and conventions
Product specifications
Instructions for use
Troubleshooting
General maintenance
Accessories and spares
Technical service
Warranty
Disposal
Appendix
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Follow general and safety instructions for hazard prevention. E.g., always wear protective
clothing, protective gear for the eyes and hands.
Carefully observe the specifications provided by reagent manufacturers.
When dispensing inflammable fluids, avoid the built up of static charge. Make sure that
you do not dispense into plastic vessels and do not wipe the instrument/equipment with a
dry cloth.
Use the instrument only for dispensing liquids, with strict regard to the defined limitations of
use and operating constraints.
Observe operating exclusions. When in doubt, contact the manufacturer or supplier.
Always use the instrument in such a way that neither the user nor any other person is in
danger. While dispensing, the discharge tube must always point away from you or any other
person. Only dispense into appropriate vessels and avoid splashes.
Do not press the piston when the discharge tube closure is attached.
Do not remove the discharge tube while the dispensing cylinder is being filled.
Reagents can accumulate in the cap of the discharge tube. Thus, clean it regularly.
Do not carry the mounted instrument by the cylinder sleeve or the valve block. Breakage or
loosening of the cylinder may lead to personal injury.
Use only original accessories and spare parts.
Do not attempt to make any technical alterations. Do not dismantle the instrument any
further than is described in the Operation Manual.
Always check the instrument for visual damage before use.
If there is any sign of a potential malfunction (e.g. piston difficult to move, stuck valve or
leakage), immediately stop dispensing. Consult the 'Troubleshooting' section of this
Operation Manual and contact the manufacturer if needed.
Safety Instructions
VWR E-Burette may sometimes be used for operations involving hazardous materials and
equipment. It is beyond the scope of this manual to address all of the potential risks associated
with its use in such applications. It is the sole responsibility of the user to consult and establish
appropriate safety and health practices and determine the applicability of regulatory
limitations, prior to the usage of this instrument.
1.
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8.
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Please follow the guidelines below, and read this manual in its entirety to ensure safe operation
of the unit.
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Package Contents
Description Quantity
E-Burette-50 ml 1
Telescopic tube 1
Control Panel 1
Bottle Adapters 5
Dispenser Thread Reducer 1
Charging AC Adaptor 1
Control Panel Stylus 1
USB Drive for Software & Driver 1
Mini USB Cable 1
Extra Amber Colored Window 1
14.4 V Li-ion Rechargeable Battery 1
Calibration Certificate 1
Operation Manual 1
Unpacking
●Connecting the batteries
1. Open the battery panel at the back of the control panel.
(Fig. 1)
2. Connect the batteries to the panel wire by inserting
the battery connector into the panel connector firmly.
It locks with a ‘click’ sound.
(Fig. 2)
Fig. 1
Fig. 2
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3. Close the panel.
(Fig. 3)
4. Press the ON/OFF button.
(Fig. 4)
5. The screen will display ‘Welcome’.
(Fig. 5)
NOTE:
In order to replace the batteries, press the lock button to disengage the battery lock
and remove the old batteries.
Installation
1. Adjust the length of the Telescopic tube (FEP tube) to fit your
particular reservoir. If you require a longer tube, it is provided
on request. (Fig. 6)
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Fig. 3
Fig. 4
Fig. 5
Fig. 6

2. Fix the Telescopic tube as shown. The tube’s ends have different
diameters – fix it from the wider end.
(Fig. 7)
3. Choose the correct adapter for the bottle.
The threaded platform base of E-BURETTE has a 30 mm screw
thread. Five adapters are supplied to suit containers with a 28,
32, 38, 40, 45 mm and 30 mm (inbuilt adapter) screw neck.
(Fig. 8)
4. Fix the adapter on the reservoir bottle by screwing it in clockwise
direction. (Fig. 9)
5. Mount the instrument. Screw it to the reservoir by applying gentle hand torque applied to
the threaded platform base only. In case of removal, apply the same technique to the base,
in the opposite direction.
6. Connect the cable from the instrument housing to the port at the
back of the control panel with a firm push, as shown. Check for the
cable position. The flat surface of the connector with an arrow
mark will face down.
(Fig. 10)
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Fig. 7
Fig. 8
Fig. 9
Fig. 10

7. If charging is required, insert the charging pin at the back of the
control panel and connect the power cord with the AC adaptor
firmly and then plug the two pin power cord to the 220 V power
supply.
(Fig. 11)
8. The battery indicator will show the charging symbol.
(Fig. 12)
9. The E-Burette is now ready to be switched on. Press the ON/OFF
button at the back of the control panel to switch ON the control
panel.
(Fig. 13)
Transporting the instrument
●When mounted to a reagent bottle, always carry the instrument as
shown and always store it in the upright position.
(Fig. 14)
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Fig. 11
Fig. 12
Fig. 13
Fig. 14

Computer Connectivity
Insert the pen drive provided with the package in your PC/Laptop for driver files and software.
Please note that there are two set up files in the pen drive.
● CDM21228
● E-Burette Setup Files
Procedure to install the driver & software:
● Installing the CDM21228 driver files:
1. Double click the CDM21228 setup icon.
(Fig. 15)
2. Press the Extract tab from the FTDI CDM driver window.
(Fig. 16)
3. Click to accept the licence agreement.
(Fig. 17)
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Fig. 15
Fig. 16
Fig. 17

4. Then, click the Finish button on the device driver installation
wizard.
(Fig. 18)
●Installing the instrument software
1. Double click the E-BURETTE setup icon.
(Fig. 19)
2. Click Next to start the Install Shield Wizard for Communication
window.
(Fig. 20)
3. Click Next to choose the destination folder of the software files.
(Fig. 21)
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Fig. 18
Fig. 19
Fig. 20
Fig. 21

4. Click Install for the ready to install program window.
(Fig. 22)
6. Click Finish for the Install Shield Wizard completion window.
(Fig. 24)
7. Communication icon will then appear on the desktop.
(Fig. 25)
Intended Use
VWR E-BURETTE is a state-of-the-art Motor Operated Burette with sophisticated features and
functionality. It is intended for use in laboratories and the field for easy, safe and accurate
titrations.
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Fig. 22
Fig. 23
Fig. 24
Fig. 25
5. Click Next for the user account control window.
(Fig. 23)

Symbols and Conventions
CAUTION This symbol indicates a potential risk and alerts you to
proceed with caution
Product Specifications
Performance Data 50 ml
Unit Type Microprocessor-controlled motorized piston lift system
with recirculation valve
Volume Ranges 0.01 ml – 500 ml (Max piston lift 50 ml, automatic addi-
tion)
Volume Accuracy A= 0.05% / CV = 0.05%
Increment 10 µl
Operating Temperature +10 °C to +40 °C (from 50 °F to 104 °F)
Power Supply 18 V, 3 A (Output supply : 110 V, 230 V)
Battery Operation
One complete battery charge gives 3 hours (approx.)
of continuous operation, (Battery capacity indicated on
TFT display and charging time 6.5 hrs.)
Quality Control In compliance with DIN EN ISO 8655-3
Touchscreen 4” TFT Screen
PC Interface Mini USB Cable
Languages Available in 4 languages (English, Spanish, German and
French)
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12. Delivery Nozzle
10. Delivery Tube
11. Recirculation
Valve
1. Cap
2. Window
13. Nozzle Cover
15. Panel
9. Beaker
8. Reservoir Bottle
7. Telescopic Tube
6. Adapter
4. Middle Housing
3. Retainer
Ring
5. Chuck Nut
14. TFT Screen 4”
16. Stylus
Instructions for Use
Overview
VWR E-BURETTE is designed for dispensing liquids directly from the reservoir bottle.
It is calibrated in accordance with the guidelines of the DIN EN ISO 8655 – 3.
When the instrument is correctly used, the dispensed liquid comes into contact with only the
following chemically resistant materials: PTFE, FEP and Borosilicate glass.
Error Limits
The error limits (Accuracy and Coefficient of Variation) mentioned in Product Specifications
are in accordance with the nominal capacity (or maximum volume) indicated on the
instrument. These are obtained by using the instrument with distilled water at equilibrium,
ambient temperature of 20 °C, while operating the device smoothly and steadily.
The error limits are well within the limits of DIN EN ISO 8655-3.
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Getting Started
Switching on the control panel
1. Switch on the instrument using the ON/OFF switch at the back of the control panel.
2. When it boots, the instrument will warn the user to switch the knob to recirculation mode.
3. Turn the knob to re-circulation mode and click the tick mark (✓) on
the control panel screen when ready.
(Fig. 27)
4. The instrument will reset automatically. It is now ready to use.
Purging
● This step is recommended before using the Burette to ensure bubble free dispensing.
1. Click on the purging mode from the Home Screen on the control panel. (Fig. 28)
Fig. 26
Fig. 27
Fig. 28
(Fig. 26)
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2. The screen on the control panel will warn the user to turn the knob to re-circulation mode.
3. Turn the knob to re-circulation mode and click the tick mark (✓)
on the control panel screen when ready.
4. The E-BURETTE will purge automatically. If the device is still not properly
purged, go to step 1 and repeat the procedure till no large air bubble is visible
below the piston.
●A few air bubbles up to 1 mm in size are permissible.
Fig. 29
Fig. 30
(Fig. 29)
(Fig. 30)
Important Guidelines
Physical Limits
This E-BURETTE is designed for titrating liquids, observing the following physical limits:
● Maintain instrument and reagent between +10 °C to +40 °C (from 50 °F to 104 °F).
●Maintain reagent vapor pressure up to 600 mbar (maximum).
Aspirate slowly above 300 mbar in order to prevent the liquid from boiling.
● Kinematic viscosity upto 500 mm2/s.
(dynamic viscosity [mPas] = kinematic viscosity [mm2/s] x density [g/cm3])
● Relative air humidity between 20% and 90%.
Use fluids with density upto 2.2 g/cm3.
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Operating Limitations
● Chlorinated and fluorinated hydrocarbons or chemical combinations which form depostis
may make it difficult for the piston to move or jam it. If the piston becomes too diffcult to move,
immediately clean the instrument.
● While dispensing inflammable fluids, avoid the built up of static charge. Make sure that you do
not dispense into plastic vessels and do not wipe instruments with a dry cloth.
● E-BURETTE is designed for general laboratory applications and complies with relevant
standards, like DIN EN ISO 8655-3. Please check the compatibility of the instrument for a
specific application (e.g. trace material analysis, food sector etc.). Approvals for specific
applications, like production and administration of food, pharmaceuticals and cosmetics are
not available.
Operating Exclusions
Do not use the instrument with:
●Liquids that attack FEP, PFA and PTFE (e.g. dissolved Sodium Azide*).
●Liquids that attack borosilicate glass (e.g. Hydrofluoric acid).
● Hydrochloric acid > 40% | Tetrahydrofuran or Oxolane | Trifluoroacetic acid.
●Explosive liquids (e.g. Carbon Disulfide).
●Suspensions (e.g. of charcoal) as the solid particles may clog or damage the instrument.
●Liquids that attack PP (cap).
●An aggressive atmosphere, e.g. HCl fumes.
* The permissible concentration of dissolved Sodium Azide is not more than 0.1%.
Storage Conditions
Store the instrument and accessories in a clean, cool and dry place. Storage temperature
from –20 °C to +50 °C (from –4 °F to 122 °F) is advised with relative humidity between 5%
and 95%.
.
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Sensitive Media
For light-sensitive media (e.g., Iodine, Potassium Permanganate and Silver Nitrate solutions),
we recommend the use of ‘Amber Coloured Windows’ or the inspection windows provided in
the box.
1. To replace the inspection window, unclip the default inspection
window by pressing it from its top and then removing it.
(Fig. 31)
2. Place the Amber Coloured Window in the slot provided at the
bottom of the housing and press it down until you hear a click sound.
(Fig. 32)
General Operating Instructions
Control panel brightness setting
● User can change brightness from setting screen on the control panel.
1. Click on the settings icon from the home screen.
(Fig. 33)
2. In the settings windows, click the BRIGHTNESS icon.
(Fig. 34)
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Fig. 31
Fig. 32
Fig. 33
Fig. 34

3. From the BRIGHTNESS window, select the level of brightness and
tick mark to save it.
(Fig. 35)
Language Settings
● User can select the preferred language from the language
settings.
1. Click on the settings icon from the home screen
(Fig. 36)
2. Select the preferred language from the tab by clicking on it and tick mark (✓) to save it.
E-BURETTE supports four languages English, German,
Spanish and French.
(Fig. 37)
Operation
Wear protective clothing, protective gear for the eyes and hands. Liquid may
accumulate in the cap. Follow all safety instructions and observe limitations of use and
operating constraints.
1. Remove cap from the discharge tube.
(Fig. 38)
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Fig. 35
Fig. 36
Fig. 37
Titration
Fig. 38

2. Click on the Titration mode on the home screen.
(Fig. 39)
3. The screen on the control panel will warn the user to turn the knob to titration mode.
4. Turn the knob clockwise to set at titration mode and click the tick ( ✓ )
mark on the screen of the control panel when ready.
(Fig. 40)
5. Place the discharge tube orifice against the inner wall of a suitable receiving vessel.
6. Now fill the barrel from the titration screen by clicking the FILL
button (Fig. 41 - left part). By pressing the STOP button, the filling
volume can be stopped as and when you need to.
(Fig. 41 - right part)
7. Three dispensing speeds are provided, including drop-wise dispensing, which allows the user
to achieve the end point very accurately.
●Fast mode
In this mode, the dispensing speed is 3.8 ml/sec.
(Fig. 42)
Fig. 39
Fig. 40
Fig. 41
Fig. 42
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●Medium mode
In this mode, the dispensing speed is 1.3 ml/sec
(Fig. 43)
●Dropwise mode
In this mode, the dispensing speed is 0.010 ml/click (Fig. 44)
8. Dispensing can be performed by touching the screen and stops
immediately when the touch is removed.
9. Press the TARE button to reset to Zero & repeat.
(Fig. 45)
Data Transfer Setup
●Connecting the USB Mini Cable
1. Connect the Mini USB cable from the control panel to your
PC/Laptop for transferring and storing the control panel’s data on
the latter. (Fig. 46)
2. Insert the wider end of the USB cable in the USB port of the
PC/Laptop and the smaller end at the back of the control panel.
(Fig. 47)
Fig. 43
Fig. 44
Fig. 45
Fig. 47
Fig. 46
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