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Whatman™ Qualitative Filter Paper: Grade 1 Sheets

Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Sheets are widely used standard grade filter paper for routine applications with medium retention and flow rates.

Manufacturer: whatman™  WHT1001918

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Catalog No. 09-805-1F

  • / Pack of 500 Each

Description & Specifications


Dimensions (L x W) 570 x 460mm
Width (Metric) 460mm
Length (Metric) 570mm
Thickness (Metric) 180μm
Flow Rate Medium
Quantity 500Pack
Pore Size (Metric) 11μm
Format Sheet
Material Cellulose
Grade 1
Porosity Medium


These cellulose filters are used in qualitative analytical techniques to determine and identify materials and for clarifying liquids. 
  • Particle Retention: >11μm
  • Porosity: medium
  • Filtration speed: ASTM™, 40 sec.; Herzberg, 150 sec.
  • Surface: smooth
  • Separates precipitates such as lead sulfate, calcium oxalate (hot) and calcium carbonate
  • Used for soil analysis and seed testing procedures in the agricultural industry
  • Used to separate solid foodstuffs from associated liquid or extract liquid in the food industry
  • Atmospheric dust is collected from airflow and the stain-intensity measured 
  • Impregnated with a chromogenic reagent and color formation quantified by optical reflectance for gas detection



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