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vwr.com I Instruction manual VWR® G Water System
Note: Please check local regulations on how to properly discharge 0.1 M NaOH.
e)
Open the drain valve underneath the tank, drain all solution.
f)
Close the valve by turning it 90º. Put system into Ready mode to fill the tank full. Put system
into Standby mode.
g)
Gently tilt the tank and swirl, then open the valve to drain all water.
h)
Repeat Step f and g for two more time.
i)
Take a water sample from the tank. Use a pH paper to check its pH. If the water is basic,
repeat Step f and g one more time.
j)
Plug the tubing back to the system. Put the system into Ready mode.
5.5 History Inquiry and Export
Insert a USB stick into the port on the control
console as shown.
Swipe left on the Screen to Maintenance Menu
in Standby mode. Tap
History
on Maintenance
Menu.
Tap
Start Date
and
End Date
to choose the
date that need to check.
