Products line

Qualitative filter


Qualitative filter paper for precipitate removal and qualitative analysis preparation:
  • Made of 100% alpha cotton cellulose; Ash content 0.1%
  • Stable from pH 0 ~ 12; thermostable up to 120?C
    Contact us for more information on this line of products, including conversions to other manufacturers' products.

     Product Specifications

    Type
    Applications/Comments
    Weight 
    (g/m2)
    Thickness 
    (mm)
    Retention Characteristics
    (?m)
    Collection Efficiency 
    (%, 0.3?m DOP)
    No. 1
    Retains large crystalline particles and gelatinous precipitates. Fast flow rate, smooth surface, normal hardness.
    90
    0.20
    Coarse (6)
    65
    No. 2
    Retains medium crystalline particles. Fast flow rate, smooth surface, normal hardness.
    125
    0.26
    Medium (5)
    80
    No. 231
    Retains crystalline particles. Moderate flow rate, smooth surface, normal hardness.
    95
    0.18
    Medium
    -
    No. 232
    Retains medium to medium-fine particles. Slow flow rate, smooth surface, normal hardness.
    90
    0.18
    Medium/ Medium Fine
    -
    No. 131
    High retention efficiencey for fine particles, like barium sulfate. Slow flow rate, smooth surface, normal hardness.
    140
    0.25
    Medium-Fine (3)
    90
    No. 235
    Highest retention efficiency, retaining very fine particles. Very slow flow rate, smooth surface, normal hardness.
    95
    0.17
    Very Fine
    -
    No. 101
    Seed germination; retains large particles.
    80
    0.21
    Coarse and Gelatinous (6-7)
    -