Metrohm 872 Extension Module Sample Prep - Manual (Page 31)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 5 Handling and maintenance
872 Extension Modul – Sample Prep ￭￭￭￭￭￭￭￭ 23
Order
number Name Material Inner
diameter Use
6.1826.360 Pump tubing LFL
(white/white), 3-stop-
per PVC (Tygon) 1.02 mm For sample transfer.
6.1826.380 Pump tubing LFL
(gray/gray), 3-stopper PVC (Tygon) 1.25 mm For inline sample dilution.
6.1826.390 Pump tubing LFL (yel-
low/yellow), 3-stop-
per PVC (Tygon) 1.37 mm For the sample solution in
inline ultrafiltration.
5.2.2.2 Pump tubing connector with filter
The 6.2821.130 filters (13-2) should be changed every 3 months, more
frequently at higher backpressure.
1 2 3
Figure 13 Pump tubing connection – changing the filter
1 Tubing olive 2 Filter 6.2821.130
Packaging contains 10 items.
3 Filter screw
Replacing the filter
1 Unscrewing the filter screw
￭ Unscrew the filter screw (13-3) out of the tubing olive (13-1).
2 Replacing the filter
￭ Remove old filter (13-2).
￭ Place new filter (13-2) flat in the tubing olive (13-1).
3 Mounting the filter screw
￭ Screw filter screw (13-3) back into the tubing olive (13-1).