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vwr.com I Instruction manual VWR® U Water System
1.5 Operation Principles
VWR U water system produces ultrapure water and pure water directly from tap water. Most
particles, ions and organic compounds are removed through the pre-filtration, RO membrane, then
the RO water goes to the storage tank. When in need of ultrapure (UP) water, RO water goes
through a UV lamp chamber with a dual wavelength UV lamp to destroy trace organic pollutants in
water, then through a polishing cartridge to remove the last trace of ions, then a 0.2
μm final filter
to the outlet.
VWR U Water Flow Diagram
No.
Description
No.
Description
C1
RO Booster Pump
C2
Distribution Pump
I1
Feed Conductivity Sensor
I2
RO Conductivity Sensor
I3
Tank water Resistivity Sensor
(optional)
I4
TOC Sensor
I5
UP Resistivity Sensor
J
Pure Water Tank
N2
185 nm UV Lamp
N3
Tank UV Lamp
O1
AC Pack
O2
P Pack
O3
U Pack
O4
H Pack
O5
T Pack (optional)
O5
RO Pack(s)
P
Pressure Sensor
S1
Inlet Filter
S2
Inline Filter
V
Flow Meter
W
Tank Vent Filter
I1
N2
P
O4
C1
O1
J
I4
I2
O3
I5
N3
O6
Tap water
O2
O5
S1
S2
I3
UP Dispenser
HP Dispenser
V
C2