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: 1440-185

UNSPSC: 41104929

Code: 69

Additional Details:
Additional Details: Weight: 1.00000kg



Product Code. 11332945

Quantity Price
1 £ 71.6 / Pack of 100
10 £ 57.28 / Pack of 100
Estimated Shipment
25-04-2017
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  • Description and Specification
  • Alternative Products
  • Documentation
Description and Specification

Specification

Material High-quality Cotton Linters
For Use With (Application) Medium crystalline precipitates: calcium oxalate, well-digested barium. Normal loading; limited wet strength
Diameter (Metric) 185mm
Pore Size (Metric) 8μm
Thickness (Metric) 210μm
Quantity 100Pack
Flow Rate Medium
Porosity Medium
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

Alternative Products
Documentation