溶剂入口过滤器 Glass 20um, OEM for 5041-2168
产品介绍
相关资料
MSDS
COA
American standards - (Kimble & Corning, ASTM) nominal pore size, in microns
European standards - (Robu & Schott, ISO 4793) nominal pore size, in microns
Ace Glass, nominal pore size, in microns
Ace makes their filters from fibers, rather than particles.
Designation Pore size, in microns A 145-174 µm B 70-100 µm C 25-50 µm D 10-20 µm E 4-8 µm
Each of the three systems of pore size specification generally cover your common needs. There are a few specialized porosities in the finer range, such as 0.5 - .75 µm, in limited thicknesses and diameters.
Porosities of sintered glass filters are determined dynamically: air is forced through a frit just immersed in water until a bubble goes through. The pressure required correlates with the pore size, according to theory: pore diameter (in microns) = 30 * surface tension (in dynes/cm) / pressure (in mm HG). This should correlate with the average pore size of the whole frit. This also says nothing about the specific shape of the pores; some could be long and narrow, with the same functional aperture as those that are closer to round.
If the material you are filtering is not uniform in size, but rather a distribution of sizes, the likelihood of particles clogging the frit is large.
Pore volume for various porosities
Pore volume in % ~ 32% ~ 35 % ~ 40 % ~ 40 % ~ 42 % ~ 42 % ~ 45 % ~ 50 %
These values are measured under vacuum; at atmospheric pressure, there may be dead end pores which would be unavailable to your liquid.
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