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Home  » Categories »  Ahlstrom Brand Laboratory Filters »  Ahlstrom Qualitative Filter Papers »  Ahlstrom Standard Qualitative Filter Papers »  Ahlstrom Standard Grade 642 Filter Qualitative Papers

Ahlstrom Standard Grade 642 Filter Qualitative Papers

Ahlstrom Standard Grade 642 Filter Qualitative Papers   Ahlstrom 642 has finer particle retention slightly lower filtration speed and higher absorption than Ahlstrom 601. This low ash grade contains more than 95% super refined alpha-cellulose and linter fibers. Flow rate: medium. Retention: 2.0 microns.

Ahlstrom offers a complete range of low ash filter papers for general laboratory work that provides you with the correct combination of particle retention filtration speed loading capacity and wet-strength. All our qualitative grades consist of > 95% super refined α-cellulose and linter fibers.

  • Ahlstrom Laboratory Filter Catalog
  • About Ahlstrom Filter Grades (pdf)


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    6421-0900 Ahlstrom Qualitative Filter - Grade 642
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    6421-0900
    Ahlstrom Qualitative Filter - Grade 642

    Retail Price US$279.39
    Our Price US$237.48
    9.0 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 5000/pk
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    Ahlstrom Qualitative Filter - Grade 642

    US$237.48
    Code: 6421-0900
    9.0 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 5000/pk
    6421-1100 Ahlstrom Qualitative Filter - Grade 642
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    6421-1100
    Ahlstrom Qualitative Filter - Grade 642

    Retail Price US$357.81
    Our Price US$304.14
    11 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 5000/pk
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    Ahlstrom Qualitative Filter - Grade 642

    US$304.14
    Code: 6421-1100
    11 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 5000/pk
    6421-1250 Ahlstrom Qualitative Filter - Grade 642
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    6421-1250
    Ahlstrom Qualitative Filter - Grade 642

    Retail Price US$405.44
    Our Price US$344.62
    12.5 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 5000/pk
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    Ahlstrom Qualitative Filter - Grade 642

    US$344.62
    Code: 6421-1250
    12.5 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 5000/pk
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    Short Lead times.
    Lab Water Deionizer




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    APS Polaris XL 4 Lab Water System
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    TAKING PRE-ORDERS
    Short lead Time. 


    This high capacity four housing lab water system is designed to provide up to 3 l.p.m. of ultrapure water exceeding ASTM and CAP Type I, II or III specifications.

    See all Polaris Systems Here

    PROUDLY MADE IN THE USA


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    Operating Manual

    See all Polaris Systems Here


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    Operating Manual

    See all Polaris Systems Here


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    This compact single housing is designed to provide 1 g.p.m. of ultrapure water exceeding ASTM and CAP Type II specifications.  

    Comparable to Barnstead D4511

    See all Polaris Systems Here


    PROUDLY MADE IN THE USA

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    Operating Manual

    US$1,761.72 Details
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