Cytiva Whatman™ Qualitative Filter Papers: Grade 4 Sheets

Description

Filters and retains course particles for monitoring air pollution. Whatman™ Qualitative Filter Papers: Grade 4 Sheets are used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

 

These cellulose filters are used in qualitative analytical techniques to determine and identify materials and for clarifying liquids. 

• Particle Retention: 25μm
• Porosity: Coarse
• Filtration speed: Herzberg, 37 sec.
• Surface: smooth
• Extremely fast filtering  with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide
• Useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis

Specifications

• Description: Grade 4 Qualitative Filter Paper Standard Grade, sheet, 460 × 570 mm
• Format: Sheet
• Material: Cellulose
• Pore Size: 20 to 25 μm
• Filtration Speed: 37 sec.
• Flow Rate: Fast
• For Use With (Application): A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
• Grade: Grade 4
• Porosity: Coarse
• Quantity: 100 Pk.
• Thickness (Metric): 210 μm
• Type: Qualitative Filter Paper
• Dimensions (L x W): 460 x 570 mm (18.11 x 22.45 in.)
• Length (Metric): 570 mm
• Width (Metric): 460 mm