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    304

    What is Grade 304?

    This grade covers a wide range of laboratory applications and is sued for clariying liquids and for rapid filtration of coarser precipitates such as lead sulfate, lead chromate, calcium oxalate, calcium carbonate, aluminum phosphate, barium carbonate and beryllium hydroxide. Grade 304 can be found in soil analysis, seed testing and in air pollution to collect dust-laden air and is also commonly used in the food indsutry to seperate foodstuffs from associated liquid of extracting liquid.

    Whatman Cross Reference = No.1
    Speed class Medium Filtering
    Thickness (mm) 0.16
    Pore size (μM) 5-13
    Weight (g/m²) 73
    Filtration Speed (sec*) 88
    Burst Strength (Kg/cm²) 1.95
    *According to DIN 53137
    Diameter (mm) Product Code
    55 304055
    70 304070
    90 304090
    110 304110
    125 304125
    150 304150
    185 304185
    240 304240
    300 304300
    320 304320