Cytiva Whatman™ Quantitative Filter Paper: Grade 40 Circles

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