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  5. Cytiva Whatman™ Qualitative Filter Paper: Grade 1 Circles

Cytiva Whatman™ Qualitative Filter Paper: Grade 1 Circles

Catalog No. 09927155 Shop All Cytiva Products
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42.5 mm
47 mm
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Quantity:
100/Pk.
400/Pk.
500/Pk.
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Product selection table with 23 available options. Use arrow keys to navigate and Enter or Space to select.
Catalog No. Diameter (Metric) Quantity
09-927-155 20 mm 400/Pk.
09-805-1B 15 mm 500/Pk.
09-927-223 25 mm 400/Pk.
09-927-834 30 mm 400/Pk.
09-805 32 mm 100/Pk.
09-805A 42.5 mm 100/Pk.
09-805-342 47 mm 100/Pk.
09-805B 55 mm 100/Pk.
09-805C 70 mm 100/Pk.
09-805-345 85 mm 100/Pk.
09-805D 90 mm 100/Pk.
09-805E 110 mm 100/Pk.
09-805F 125 mm 100/Pk.
09-805G 150 mm 100/Pk.
09-805H 185 mm 100/Pk.
09-805J 240 mm 100/Pk.
09-805K 270 mm 100/Pk.
09-805L 320 mm 100/Pk.
09-805-1G 25 mm 100/Pk.
09-805P 30 mm 100/Pk.
09-805-1C 385 mm 100/Pk.
09-805-1D 400 mm 100/Pk.
09-805-1A 10 mm 500/Pk.
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Catalog No. 09-927-155 Supplier Cytiva Supplier No. 1001020
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Description

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.

 

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

 


TRUSTED_SUSTAINABILITY

Specifications

Airflow Rate 13sec./100mL/sq. in.
Basis Weight 87 g/m2
Description Grade 1 Qualitative Filter Paper Standard Grade, circle, 20 mm
Format Disc
Material Cellulose
Particle Retention >11 μm
Filtration Speed 150 sec.
Flow Rate 57mL/min. (water)
For Use With (Application) A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids.
Grade Grade 1
Porosity Medium
Quantity 400/Pk.
Thickness (Metric) 180 μm
Type Qualitative Filter Paper
Diameter (English) 0.78 in.
Diameter (Metric) 20 mm
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