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Cytiva 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.

£5.73 - £124.00

Specifications

Grade Grade 4
Filtration Speed 37 sec.
Pore Size (Metric) 20 to 25μm
Particle Retention Coarse particles and gelatinous precipitates
Format Circles
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Products 16
Product Code Brand Diameter (Metric) Price Quantity & Availability  
Product Code Brand Diameter (Metric) Price Quantity & Availability  
11370444
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Cytiva
1004-027
27 mm £34.76
Pack of 400
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Estimated Shipment
19-03-2021
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12375813
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Cytiva
1004-041
41mm £6.53
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Estimated Shipment
18-03-2021
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11342845
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Cytiva
1004-042
42.5 mm £11.75
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Estimated Shipment
18-03-2021
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11390444
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Cytiva
1004-047
47 mm £5.73
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17-03-2021
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11300454
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Cytiva
1004-050
50 mm £5.88
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Estimated Shipment
18-03-2021
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11352845
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Cytiva
1004-055
55 mm £14.27
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10598671
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Cytiva
1004-070
70 mm £14.87
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11372845
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Cytiva
1004-090
90 mm £17.33
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11382845
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Cytiva
1004-110
110 mm £22.50
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Estimated Shipment
17-03-2021
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11392845
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Cytiva
1004-125
125 mm £28.38
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10614941
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Cytiva
1004-150
150 mm £36.07
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10419691
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Cytiva
1004-185
185 mm £53.34
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11322855
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Cytiva
1004-240
240 mm £84.64
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11360444
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Cytiva
1004-270
270 mm £53.39
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12-04-2021
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11332855
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Cytiva
1004-320
320 mm £91.42
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Estimated Shipment
18-03-2021
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11380444
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Cytiva
1004-400
400 mm
£124.00
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Estimated Shipment
15-04-2021
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Description

Description

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.

 

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
20 to 25μm
Circles
Cellulose
37 sec.
Coarse particles and gelatinous precipitates
210 μm
SDS