Quantitative filter papers, ashless grades, grade 40, Whatman™

供应商: Whatman products (Cytiva)
Whatman™
WHAT1440-070EA 0 CNY
WHAT1440-070 WHAT1440-090 WHAT1440-917 WHAT10380006 WHAT10380005 WHAT1440-329 WHAT10380004 WHAT1440-125 WHAT1440-047 WHAT1440-055 WHAT1440-110 WHAT1440-6168 WHAT1440-012 WHAT1440-320 WHAT1440-042 WHAT1440-185 WHAT1440-240 WHAT1440-032 WHAT1440-150
Quantitative filter papers, ashless grades, grade 40, Whatman™
过滤器 滤纸 Quantitative Filter Paper
Whatman Grade 40 high-purity filters from Cytiva's business are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.

  • High-purity filters contain 0,007% maximum ash content
  • Medium nominal particle retention rating of 8 µm
  • Medium filtration speed (Herzberg 340 s)
  • Particularly useful for gravimetric analysis

High-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples.

Cytiva's high-purity Whatman Grade 40 ashless paper is suited to:
- 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
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