Cytiva 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.

Supplier:  Cytiva 1001240

Catalog No. 09-805J

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

 

Specifications

• Airflow Rate: 13sec./100mL/sq. in.
• Description: Grade 1 Qualitative Filter Paper Standard Grade, circle, 240 mm
• Material: Cellulose
• Filtration Speed: 150 sec.
• 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.
• Porosity: Medium
• Thickness (Metric): 180 μm
• Dimensions (L x W): Ø 240 mm
• Diameter (Metric): 240 mm

• Basis Weight: 87 g/m²
• Format: Disc
• Particle Retention: >11 μm
• Flow Rate: 57mL/min. (water)
• Grade: Grade 1
• Quantity: 100/Pk.
• Type: Qualitative Filter Paper
• Diameter (English): 9.44 in.