Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 75)

6.1 Filtration
Metrohm 838 Advanced Sample Processor, Annex 69
Test solutions:
silica particles in water
Pore size
of filter membrane 1
Effect
0.5 %, 5 μm 0.15 μm
no breakthrough
0.5 %, 5 μm 3 μm
no breakthrough
0.5 %, 5 μm 8 μm
no breakthrough
0.5 %, 5 μm 10 μm
breakthrough 2
0.5 %, 5 μm 12 μm
no breakthrough
0.5 %, 1.5 μm 0.15 μm
no breakthrough
0.5 %, 1.5 μm 3 μm
breakthrough
(1) Nominal pore size according to information supplied by manufacturer.
(2) All the membranes came from a single manufacturer except this one.
Table 7 Selection of the filtration membrane
Please also note that, because of their lack of thickness, the retention
capability of filter membranes may be lower than that of thicker filters
with the same nominal pore size. This should be taken into account
when choosing a suitable filter membrane.