Picture of Whatman Grade 44 Quantitative Ashless Filter Papers

Whatman Grade 44 Quantitative Ashless Filter Papers

Whatman Grade 44 Quantitative Ashless Filter Papers are a thin version of Grade 42 ashless paper. The thinness reduces the overall ash content, making Grade 44 well suited for analyses relying on ash-free dry weight.

  • Accurate ash free dry mass measurements
  • Fine nominal particle retention rating of 3 µm
  • Filtration speed (Herzberg 995 s)
  • Typical thickness of 180 µm
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Part NumberDiameterQuantityPrice
1444-070 70 mmPack/100$64.24
1444-090 90 mmPack/100$89.39
1444-110 110 mmPack/100$109.09
1444-125 125 mmPack/100$125.83
1444-150 150 mmPack/100$159.31
1444-185 185 mmPack/100$234.63
1444-240 240 mmPack/100$373.33