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 mm
2
/s.
(dynamic viscosity [mPas] = kinematic viscosity [mm
2
/s] x density [g/cm
3
])
● Relative air humidity between 20% and 90%.
Use fluids with density upto 2.2 g/cm
3
.
15 vwr.com I Instruction manual VWR
®
E-Burette
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