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    301

    What is Grade 301?

    Grade 301 is the slowest of the qualitative papers. This grade is used in qualitative analytical techniques to determine and identify materials. It is also extremely efficient in retaining very fine particles. Grade 301 is generally used for biological products, water analysis, soil analysis and fine precipitates such as cold precipitated barium sulfate. Grade 301 is additionally utilized with Buchner funnels and to clarify cloudy suspensions and wine.

    Whatman Cross Reference = No.5
    Speed class Very Slow Filtering
    Thickness (mm) 0.14
    Pore size (μM) 2-3
    Weight (g/m²) 84
    Filtration Speed (sec*) 180
    Burst Strength (Kg/cm²) > 0.30
    *According to DIN 53137
    Diameter (mm) Product Code
    mm: 55 Product code: 301055
    mm: 70 Product code: 301070
    mm: 90 Product code: 301090
    mm: 110 Product code: 301110
    mm: 125 Product code: 301125
    mm: 150 Product code: 301150
    mm: 185 Product code: 301185
    mm: 240 Product code: 301240
    mm: 300 Product code: 301300
    mm: 320 Product code: 301320