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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™  WHT1440185

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Catalog No. 09-845G

  • / Pack of 100 Each
 

Description & Specifications

Specifications

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
Flow Rate Medium
Quantity 100Pack
Thickness (Metric) 210μm
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

Accessories

Accessories for Catalog Number: 09845G

Item Mfr. No. Item Description Price Per Unit Quantity  
09-753-50
Fisherbrand™ Filter Forceps
fisherbrand™
SDI25510
Easy, effortless handling of membranes and glass fiber filters Each for $11.07