Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 27)

3.3 Fitting the accessories
838 Advanced Sample Processor, Installation 21
Only ultra-pure water or ethanol may be used to clean the dialysis
cell since other organic solvents (e.g. acetone) would damage the
Plexiglass cell!
3 Preparing the dialysis membrane
Remove a new dialysis membrane 40 (e.g. 6.2714.010) from
the packaging using the 6.2831.010 tweezers and immerse it
for approx. 2 minutes in a petri dish filled with ultra-pure water
until the membrane is fully soaked with water.
4 Inserting the dialysis membrane
Place the lower section 41 with the inside pointing upwards
onto a paper towel.
Insert the sealing ring 39 into the recess provided on the lo-
wer section 41.
Insert the wet dialysis membrane 40 (e.g. 6.2714.010) using
the 6.2831.010 tweezers inside the sealing ring 39 on the lo-
wer section 41.
Ensure that the water-soaked dialysis membrane does not dry out be-
fore fitting it, otherwise, it can no longer be used!
5 Closing the dialysis cell
Fit the upper section 38 onto the lower section 41 so that the
two parts fit perfectly.
Using the 6.2621.070 Allen key, fully screw in and tighten the
5 screws 42.
Figure 19 Fitting the dialysis cell into the 6.2057.010 holder
6 Fitting the dialysis cell
Slide the 6.2057.010 cell holder into a free mounting rail of the
820 IC Separation Centre or the 761 Compact IC and, now
that the dialysis cell has been screwed together, insert the di-
alysis cell 37 into the holder.