Metrohm 872 Extension Module Liquid handling - Manual (Page 49)

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7 Operation and maintenance
872 Extension Module – Liquid handling
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Order
number Name Material Inner
diameter Use
6.1826.330 Pump tubing LFL
(orange/white), 3-
stopper PVC (Tygon) 0.64 mm No special applications.
6.1826.340 Pump tubing LFL
(black/black), 3-stop-
per PVC (Tygon) 0.76 mm For the sample solution in
inline dialysis.
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.
7.3.2.2 Pump tubing connection with filter
The 6.2821.130 filters (24-2) should be changed every 3 months, more
frequently at higher backpressure.
1 2 3
Figure 24 Pump tubing connection – Changing the filter
1 Tubing olive 2 Filter 6.2821.130
Packaging contains 10 items.
3 Filter housing
Replacing the filter
1 Unscrewing filter screw
￭ Screw the filter screw (24-3) out of the tubing olive (24-1) with
the aid of two 6.2621.000 adjustable wrenches.
2 Replacing the filter
￭ Remove the old filter (24-2) with tweezers.
￭ Place the new filter (24-2) flat in the tubing olive (24-1) with
tweezers.