Filtration Guide



What Is Filtration?

Filtration is the removal of contaminants from fluid. The better the filtration the longer the component life. In general filtration that removes the most contaminants is the best filter. The degree of filtration is expressed in terms of the size in microns of the smallest particle that will not pass through the filter.

Selection of the ideal filter for your application not only depends on the degree of filtration but other elements like the cost of filtration, and the pressure drop caused by filtration. Fine filtration requires almost constant maintenance. It also can cause excessive pressure drops which contribute to inefficiencies in the system and undue strain on the transfer equipment. There are many variables to consider when selecting filter sizes and equipment. Please contact Midway Industrial Supply when you need help selecting the filters your application requires.



Questions? 

 



 Relative Size Of Micronic Particles




Table of Comparison Micron Values for Common Micronic Objects

Lower Limit of Visitibility (Naked Eye)    40 Microns
White Blood Cells    25 Microns
Red Blood Cells    8 Microns
Bacteria (Cocci)    2 Microns


Wire Screen Mesh vs. Micron Comparison Chart

MESH MICRON
5  3000
7.5 1980
10 1480
16 975
20 750
30 500
40 375
50 300
60 238
80 175
100 149
140 100
200 74
250 60
270 50
325 40
400 35


Screen Sizes

Meshes Per Linear Inch U.S. Sieve #  Opening in Inches  Opening in Microns
52.36 50 .0117... 297
72.45 70 .0083... 210
101.01... 100 .0059... 149
142.86... 140 .0041... 105
200.00... 200 .0029... 74
270.26... 270 .0021... 53
323.00... 325 .0017.. 44
    .00039... 10
    .000019... .5


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