No. 40

No. 40 Quantitative Ashless Paper

No. 40
  • Most widely used general purpose gravimetric filter paper; acid washed, ash content 0.007%
  • Medium speed and retention (8 µm); rough surface
  • Used for calcium oxalate, silica in steel and well-digested barium sulfate; as a high-purity filter in the collection of trace elements and radionuclides in the atmosphere
  • Used as a support for x-ray fluorescence and as a sample carrier for Shoeniger combustion
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7 Items

per page
  1. Filter Paper, Grade 40, 55mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 5.5cm (100/pk) Learn More
    $26.83

    AW Part Number: 1440-055
    OEM Part Number(s): 1440-055

  2. Filter Paper, Grade 40, 70mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 7.0cm (100/pk) Learn More
    $27.99

    AW Part Number: 1440-070
    OEM Part Number(s): 1440-070

  3. Filter Paper, Grade 40, 90mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 9.0cm (100/pk) Learn More
    $38.98

    AW Part Number: 1440-090
    OEM Part Number(s): 1440-090

  4. Filter Paper, Grade 40, 110mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 11.0cm (100/pk) Learn More
    $46.20

    AW Part Number: 1440-110
    OEM Part Number(s): 1440-110

  5. Filter Paper, Grade 40, 125mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 12.5cm (100/pk) Learn More
    $52.33

    AW Part Number: 1440-125
    OEM Part Number(s): 1440-125

  6. Filter Paper, Grade 40, 150mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 15.0cm (100/pk) Learn More
    $69.38

    AW Part Number: 1440-150
    OEM Part Number(s): 1440-150

  7. Filter Paper, Grade 40, 185mm (100/pk)
    Whatman Filter Paper, Grade 41; Circles; Diameter: 18.5cm (100/pk) Learn More
    $102.17

    AW Part Number: 1440-185
    OEM Part Number(s): 1440-185

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7 Items

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