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Vivaflow 50
Single module
1. Set up the system as illustrated in
Diagram 1. Note the positioning of the
flow restrictor on the return line.
2. Vivaflow membranes contain trace
amounts of glycerine and sodium azide.
To remove these chemicals and to check
the security of the tube connections,
it is recommended to rinse the module,
and to test the system at full pressure
before introducing the sample.
3. Place 500 ml deionised water in a suitable
reservoir. The Vivaflow sample|diafil-
tration reservoir (prod. no. VFA006) is
recommended.
4. Pump liquid through the system to purge
any air pockets. The recirculation rate
should be in the range 200–400 ml/min,
and suitable flow should exit the filtrate
line. If used, the pressure indicator (prod.
no. VFA020), should read approximately
2.5 bar.
5. Allow 400 ml to pass into the filtrate
vessel. Check for any leakage at tubing
connection points. Drain the system
and empty or replace the filtrate vessel,
(see recovery section). The system is now
ready for use.
Filtrate vessel
Sample|diafiltration
reservoir (VFA006)
Pink flow restrictor
Designed for single use only. Anything else constitutes improper use.
Diagram 1: Vivaflow 50 set up
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