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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.

Manufacturer: whatman™  1440-240

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Catalog No. 09-845K

  • / Pack of 100 Each
 

Description & Specifications

Specifications

Quantity 100Pack
Grade 40
Material High-quality Cotton Linters
Pore Size (Metric) 8μm
Format Circle
Thickness (Metric) 210μm
Porosity Medium
Diameter (Metric) 240mm
For Use With (Application) Medium crystalline precipitates: calcium oxalate, well-digested barium. Normal loading; limited wet strength
Flow Rate Medium

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

Accessories

Accessories for Catalog Number: 09845K

Item Mfr. No. Item Description Price Per Unit Quantity