User Calibration - VWR Avantor 612-6857 Manual De Instrucciones

User Calibration

VWR Bottle Top Dispenser has been laboratory calibrated at its nominal volume. However, due
to changes in environmental conditions and the viscosity of the media which you dispense, we
recommend gravimetric testing every 3-12 months.
Gravimetric volume testing according to DIN EN ISO 8655-6 is performed as follows:
Re-Calibration Procedure
1. Set the instrument to the nominal volume or any other volume which is
most commonly used by you. Follow the common rules for calibration
used in statistical quality control (ISO 8655-5).
Set the volume and dispense five full volumes of distilled water at 20°C
on an electronic balance to establish the actual mean volume of liquid
dispensed. If the gravitational average result varies from the volume
displayed, you should re-calibrate the instrument.
2. For re-calibration pull the cap outwards to expose the Calibration nut.
(Fig. 37)
3. Using the calibration tool, turn the calibration nut clockwise to reduce
the volume and anticlockwise to increase the volume.
Repeat this procedure till the desired volume is achieved on the
electronic balance. (Fig. 38)
17. vwr.com I Instruction manual VWR Bottle Top Dispenser with Recirculation Valve
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Fig. 36
Fig. 37
Fig. 38