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GE Healthcare Whatman™ Qualitative Filter Paper: Grade 4 Circles

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

$17.86 - $420.43

Specifications

Grade Grade 4
Pore Size (Metric) 20 to 25μm
Particle Retention Coarse particles and gelatinous precipitates
Format Circles
Thickness 210 μm
View More Specs

Products 13
Catalog Number Mfr. No. Diameter (Metric) Price Quantity  
Catalog Number Mfr. No. Diameter (Metric) Price Quantity  
09-825J Accessories View Documents GE Healthcare
1004042
42.5 mm Pack of 100 Each for $17.86
 
36-101-2981 View Documents GE Healthcare
1004047
47 mm Pack of 100 Each for $20.75
 
09-825K Accessories View Documents GE Healthcare
1004055
55 mm Pack of 100 Each for $22.98
 
09-825A Accessories View Documents GE Healthcare
1004070
70 mm Pack of 100 Each for $22.98
 
09-825B Accessories View Documents GE Healthcare
1004090
90 mm Pack of 100 Each for $28.19
 
09-825C Accessories View Documents GE Healthcare
1004110
110 mm Pack of 100 Each for $35.69
 
09-825D Accessories View Documents GE Healthcare
1004125
125 mm Pack of 100 Each for $46.02
 
09-825E View Documents GE Healthcare
1004150
150 mm Pack of 100 Each for $58.55
 
09-825F Accessories View Documents GE Healthcare
1004185
185 mm Pack of 100 Each for $86.83
 
09-825G Accessories View Documents GE Healthcare
1004240
240 mm Pack of 100 Each for $148.03
 
09-825L View Documents GE Healthcare
1004270
270 mm Pack of 100 Each for $194.01
 
09-825H Accessories View Documents GE Healthcare
1004320
320 mm Pack of 100 Each for $278.69
 
09-825M Accessories View Documents GE Healthcare
1004400
400 mm Pack of 100 Each for $420.43
 
Description

Description

 

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

Specifications

Grade 4
Coarse particles and gelatinous precipitates
210 μm
20 to 25μm
Circles
Cellulose