Metrohm 920 Absorber Module - Manual (Page 38)

4.3 Dosino for ultrapure water
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920 Absorber Module
1 Tighten the Dosino holder (6.2057.230) with the thread adapter
(6.1618.020) on the bottom of the dosing unit.
Next step ￭ Connect the ports 1 and 3.
Connecting port 1 and port 3
Port 1 on the left side of the Dosino is used for dosing water, which is
used for transferring the sample from the 6-port valve to the analysis
instrument. The transfer water is purified using a Metrosep I Trap 1 –
100/4.0 (6.1014.200) trap column so that it does not contaminate the
sample with undesired anions and cations.
Port 3 on the right side of the Dosino is used for connecting transfer tub-
ing. It is used for Liquid Handling.
Accessories The following accessories have to be connected to these two ports: