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.

Overview
Brand: Whatman™

Manufacturer Part Number: 1440-012

X400 GR. 40 1.27CM/400/PKFILTER

UNSPSC: 41104921

Additional Details:
Additional Details: Weight: 0.01100kg



Product Code. 11370454

Quantity Price
1 £ 11.35 / Pack of 400
Estimated Shipment
13-03-2017
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Description and Specification

Specification

Porosity Medium
For Use With (Application) Medium crystalline precipitates: calcium oxalate, well-digested barium. Normal loading; limited wet strength
Flow Rate Medium
Quantity 100Pack
Material High-quality Cotton Linters
Pore Size (Metric) 8μm
Thickness (Metric) 210μm
Diameter (Metric) 12.7mm
Format Circle
Grade 40

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