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    What is Grade 50934AH?

    Grade 50934AH borosilicate glass microfibre filter from Johnson Test Papers is a smooth surface, binder free water quality filter with unique high temperature resistance and high retention efficiency. It offers fine particle retention and product stability to over 500°C and this temperature resistance makes Grade 50934AH well-suited for TCLP test methods and is also often used in total suspended solids analysis, air pollution testing, and related EPA and ASTM protocols

    • Smooth surface for efficient precipitate recovery
    • Nominal pore size of 1.5 µm
    • Can withstand temperatures up to 500°C
    Grade 50934AH: 1.5 µm
    Discover other binder-free glass microfibre filters from Johnson Test Papers. Options are available with different wet-strengths, loading capacities, filtration speeds, and particle retentions to meet your analysis needs.
    Grade 50934AH water quality filters

    Total suspended solids analysis (previously called non-filterable residue) requires high loading capacity glass microfiber filters, such as Johnson Test Papers’ Grade 50934AH. These filters are also used in

    • Cell harvesting
    • Liquid scintillation
    • Air pollution monitoring
    • Determination of dissolved solids and volatile solids

    Whatman Cross Reference 934AH
    Speed class Fast
    Thickness (mm) 0.28
    Pore size (μM) 1.5
    Weight (g/m²) 65
    Filtration Speed (sec*) 60
    Burst Strength (Kg/cm²) 20
    *According to DIN 53137
    Diameter (mm) Product Code
    mm: 21 Product code: 50934AH21
    mm: 24 Product code: 50934AH24
    mm: 25 Product code: 50934AH25
    mm: 47 Product code: 50934AH47
    mm: 55 Product code: 50934AH55
    mm: 90 Product code: 50934AH90
    mm: 110 Product code: 50934AH110
    mm: 125 Product code: 50934AH125