ProSource Scientific Grade 4 Qualitative Filter Papers - 20-25μm

46% cheaper than Whatman Grade 4 Qualitative Filter Papers!

Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Very useful as a rapid filter for routine clean up of biological fluids or organic extracts during analysis.

Used when high flow rates in air pollution monitoring are required, and the collection of fine particles is not critical.

 Diameter  Part Number
 Price
 55 mm
 PS004-055
 $12.77 / Pack 100
 70 mm  PS004-070
 $13.43 / Pack 100
 90 mm  PS004-090
 $15.89 / Pack 100
 110 mm  PS004-110  $20.91 / Pack 100
 125 mm  PS004-125  $24.52 / Pack 100
 150 mm  PS004-150  $29.00 / Pack 100
 185 mm  PS004-185  $42.37 / Pack 100
 240 mm  PS004-240  $65.60 / Pack 100
 320 mm
 PS004-320  $124.89 / Pack 100

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