PRODUCT INFORMATION
Milli-Q Synthesis/Synthesis A10 9
PYROGARD 5000 UF CARTRIDGE
The Pyrogard 5000 UF Cartridge (called UF Cartridge in the remainder of this manual) is used to remove any
Pyrogens or Endotoxins in the Milli-Q Product Water. The UF Cartridge will also remove bacteria from the water
passing through it.
The maintenance of the UF Cartridge involves sanitising and cleaning it every 4 weeks with Sodium Hydroxide. The
Sanitisation of the UF Cartridge is described in the Maintenance Chapter of this manual.
The UF Cartridge has a Reject Water Stream which is plumbed via a piece of 8 mm OD tubing from the back of the
Milli-Q to a sink or a drain. This stream is used to transport the bacteria, pyrogens, particles, ... that are rejected by
the UF Cartridge. The flow through this piece of tubing is controlled by a solenoid valve. This valve is only open for
30 seconds every 3 hours of PRE OPERATE Mode or when the AIR PURGE Mode is active. This valve will also
open for portions of the Sanitisation Mode.
RESISTIVITY SENSOR
RESISTIVITY AND TEMPERATURE MEASUREMENTS
The resistivity sensor is used to measure the electrical resistivity of the Milli-Q Product Water. Additionally, a
thermistor (temperature sensor) is located in the resistivity sensor. The temperature displayed on the Milli-Q LCD
during PRODUCT Mode is measured by this thermistor.
TEMPERATURE COMPENSATION/CONDUCTIVITY MEASUREMENTS
The resistivity and temperature are measured while water is flowing through the sensor. The Milli-Q microprocessor
will then temperature compensate the resistivity to a 25 C value. It is possible to use the Milli-Q software to display
non-temperature compensated resistivity. It is also possible to display conductivity (S/cm) (temp. compensated or
non-temp. compensated) on the LCD by using the Milli-Q software. The software can be changed by using the
Keypad.
POINT OF USE VALVE
The Point Of Use (POU) Dispenser has a 2-way electric valve inside.
This valve is closed when the POU Dispenser Trigger is in the upright position. This also places the Milli-Q into PRE
OPERATE Mode after 90 seconds if you were using the Milli-Q in PRODUCT Mode.
When the POU Dispenser Trigger is pushed down, the electric valve is powered. This allows water to be dispensed
out of the Milli-Q System instead of being recirculated back to the pump (see flow diagram).
To Next Page
Loading...
Need help?
General
