GE Healthcare Filter Circles, Quantitative, Grade 40

Grade 40: 8 μm. General purpose ashless filter paper with medium speed and retention. For gravimetric analysis of 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 AA spectrometry. Also as a high-purity filter in the collection of trace elements and radionuclides from the atmosphere. - Properties: medium. - Ash content: 0.007 %. - Thickness: 210 μm. - Weight: 95 g / m2. - Filtration time acc. to Herzberg: 340 s.
 Ø
mm
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