JOMESA - Closed Mesh Filter

The filtrationtests were done by 5 different operators in the same way.
First the blank value of the equipment was determined. Then the test liquid was filtered by a so-called 1µm mesh filter. After that the filter was dried and archived in a filtermount. The analysis of this filter (Dirt Liquid) showed the number of particles which was hold back.

After that the filtered liquid (which passed the 1µm filter) was filtered with a 0.8µm Cellulose filter. The analysis of this 0.8µm filter (Filtered) showed the number of particles which could pass the mesh filter.

The procedure was carried out also with the so-called 5µm and 10µm filter as well as with an 15µm (open mesh) filter.
All analysis were carried out with a pixel resolution of 2.3µm/px.

Particle number in size range 5 - 15 µm (rounded):

• All closed mesh filters showed the same result in the filtration test within the accuracy of this test setup.
• The assignment 1µm, 5µm, 10µm is misleading, because it suggests a true pore size. All these fabrics do not have "true" pores.
• They are closed mesh filters and the so-called 1µm filter holds back the same number of 5-15µm partices as it allows to pass through.