Whatman Grade 41 Ashless Quantitative Filter Papers - 20μm

The fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides). Also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.

0.007% ash maximum – very pure filters suitable for a wide range of critical analytical filtration procedures.

 Diameter  Part Number
 Price
 42.5 mm  1441-042  $41.60 / Pack 100
 47 mm  1441-047  $45.78 / Pack 100
 55 mm  1441-055  $45.78 / Pack 100
 70 mm  1441-070  $56.71 / Pack 100
 90 mm  1441-090  $72.11 / Pack 100
 110 mm  1441-110  $85.17 / Pack 100
 125 mm
 1441-125
 $130.82 / Pack 100
 150 mm  1441-150  $136.76 / Pack 100
 185 mm  1441-185  $189.54 / Pack 100
 240 mm  1441-240  $297.12 / Pack 1000

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