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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.
Supplier: Cytiva 1440329
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
21 s/100 mL/in2 | |
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 | |
30 mm |
Grade 40 Ashless Filter Paper for Pollution Analysis, 30 mm circle (100 pcs) | |
Cotton Linters | |
8 μm | |
Medium | |
Grade 40 | |
100 Pack | |
Ashless |
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