Whatman Grade 40 Ashless Quantitative Filter Papers - 8μm

The classic general purpose ashless filter paper with medium speed and retention. Typical applications include gravimetric analysis for numerous components in cements, clays, iron, and steel products; as a primary filter for separating solid matter from aqueous extracts in general soil analysis, quantitative determination of sediments in milk and as a pure analytical grade clean-up filter for solutions prior to AA spectrometry. Also used as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere.

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

 Diameter  Part Number
 Price
 42.5 mm  1440-042  $50.22 / Pack 100
 47 mm  1440-047  $52.32 / Pack 100
 55 mm  1440-055  $54.61 / Pack 100
 70 mm  1440-070  $56.74 / Pack 100
 90 mm  1440-090  $76.30 / Pack 100
 110 mm  1440-110  $89.36 / Pack 100
 125 mm
 1440-125
 $100.31 / Pack 100
 150 mm  1440-150  $130.85 / Pack 100
 185 mm  1440-185  $189.56 / Pack 100
 240 mm  1440-240  $297.12 / Pack 100

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