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Cytiva Whatman™ Quantitative Filter Paper: Grade 40 Circles

Supports accurate analysis in applications sensitive to very low levels of background contamination. Whatman™ Quantitative Filter Paper: Grade 40 Circles are additionally useful in gravimetric analysis where ash content might affect weight measurements of combusted samples.

£19.05 - £406.00

Specifications

Airflow Rate 21 s/100 mL/in2
Format Disc
Material Cotton Linters
Particle Retention 8 μm
Pore Size 8 μm
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Products 15
Product Code Brand Diameter (Metric) Price Quantity & Availability  
Product Code Brand Diameter (Metric) Price Quantity & Availability  
11370454
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Cytiva
1440-012
12.7 mm
£19.05
Pack of 400
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Estimated Shipment: 04-04-2024
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10460642
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Cytiva
1440-032
32 mm
£37.80
Pack of 100
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11352935
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Cytiva
1440-042
42.5 mm
£21.55
Pack of 100
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Estimated Shipment: 04-04-2024
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11362935
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Cytiva
1440-047
47 mm
£23.50
Pack of 100
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10674122
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Cytiva
1440-055
55 mm
£39.75
Pack of 100
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11382935
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Cytiva
1440-070
70 mm
£22.65
Pack of 100
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Estimated Shipment: 04-04-2024
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11392935
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Cytiva
1440-090
90 mm
£54.55
Pack of 100
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11302945
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Cytiva
1440-110
110 mm
£75.45
Pack of 100
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11312945
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Cytiva
1440-125
125 mm
£87.10
Pack of 100
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11322945
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Cytiva
1440-150
150 mm
£119.00
Pack of 100
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11332945
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Cytiva
1440-185
185 mm
£125.00
Pack of 100
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Estimated Shipment: 04-04-2024
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11342945
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Cytiva
1440-240
240 mm
£144.00
Pack of 100
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Estimated Shipment: 08-04-2024
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11390454
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Cytiva
1440-320
320 mm
£306.00
Pack of 100
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Estimated Shipment: 08-04-2024
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11380454
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Cytiva
1440-329
30 mm
£19.50
Pack of 100
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Estimated Shipment: 10-04-2024
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11300464
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Cytiva
1440-6168
450 mm
£406.00
Pack of 100
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Estimated Shipment: 14-08-2024
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Description

Description

Supports accurate analysis in applications sensitive to very low levels of background contamination. Whatman™ Quantitative Filter Paper: Grade 40 Circles are additionally useful in gravimetric analysis where ash content might affect weight measurements of combusted samples.

Ashless grades are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman™ quantitative filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis.
  • High-purity filters for quantitative analysis
  • Contain 0.007% maximum ash content
  • Medium nominal particle retention rating of 8μm
  • Medium filtration speed (Herzberg 340 sec.)

Suited for
  • Soil analysis, when separating solid matter from aqueous extracts
  • Quantitative determination of milk sediment
  • Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry
  • Analysis of constituent components in cements, clays, iron, and steel products
  • Collection of trace elements and radionuclides from the atmosphere
Specifications

Specifications

21 s/100 mL/in2
Cotton Linters
8 μm
Medium
Grade 40
100 Pack
Ashless
Disc
8 μm
ASTM, 75 seconds; Herzberg, 340 seconds
Designed for gravimetric analysis and the preparation of samples for instrumental analysis.Gravimetric analysis for numerous components in cements, clays, iron, and steel products.As a primary filter for separating solid matter from aqueous extracts in
Medium
210 μm
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