WHATMAN Grade 40 Filter Papers 1440-042 100 Each - MDL-GEH1440042

Grade 40 Filter Paper, 4.25 cm

• Ashless: 0.007% ash maximum for Grades 40 to 44 and a maximum of 0.01% for the 589 Grades
• These are very pure filters suitable for a wide range of critical analytical filtration procedures
• Whatman quantitative filters from GE Healthcare are designed for gravimetric analysis and the preparation of samples for instrumental analysis
• They are available in three formats designed to meet specific needs
• The classic general-purpose ashless filter paper with medium speed and retention
• Typical applications include: gravimetric analysis for numerous components in cements, clays, iron, and steel products; as a primary filter for separating solid matter from aqueous extracts in general soil analysis; quantitative determination of sediments in milk; and as a pure analytical grade clean-up filter for solutions prior to atomic absorption (AA) spectrometry
• Also used as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere