VWR avantor 612-6857, Instruction Manual

Page: 8 / 89

Getting Started
Priming
Open the cap of the dispensing tube (Fig. 6). For safety hold the discharge
tube orifice on the inner wall of a suitable receiving vessel.
Fig. 6
Fig. 7
1. Set the valve to ‘Recirculate’. (Fig. 7)
For priming gently pull up the piston approx, 30mm and push it down
rapidly until the lower stop. Repeat this procedure 5 times
(Fig. 8).
2. Turn valve to ‘Dispense’ (Fig.9).
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, Wipe away any remaining drops from
the discharge tube.
Fig. 8
Note :
Before using the instrument for the first time, ensure it is rinsed carefully and
discard the first few samples dispensed.
Avoid splashing.
Important Guidelines
Operating limitations
Fig. 9
This instrument is designed for dispensing liquids, observing the following physical limits:
●
Use temperature from +15°C to +40°C (from 59°F to 104°F) of instrument and reagent
●
Vapor pressure up to max. 600 mbar. Aspirate slowly above 300 mbar, in order to
prevent the liquid from boiling.
●
Kinematic viscosity 500 mm
2
/s
(dynamic viscosity [mPas] = kinematic viscosity [mm
2
/s] x density [g/cm
3
)
●
Density: up to 2.2 g/cm
3
8. vwr.com I Instruction manual VWR
®
Bottle Top Dispenser with Recirculation Valve