Whatman™ Qualitative Filter Paper: Grade 1 Circles

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

Manufacturer: Whatman™ 1001185

 View more versions of this product

Catalog No. 09-805H

  Check Availability
Add to Cart


    Diameter (Metric) 185mm
    Thickness (Metric) 180μm
    Format Circle
    Quantity 100/pk.
    Material Cellulose
    For Use With (Application) For clarifying liquids. Used in qualitative analytical separations of precipitates such as lead sulphate; air pollution monitoring, gas detection, soil analysis
    Porosity Medium
    Particle Retention >11μm
    Grade 1


    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


  • Description & Specifications
  • Promotions

Related Products

Product Content Feedback

We continue to work to improve your shopping experience and your feedback regarding this content is very important to us. Please use the form below to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Cancel Submit