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Whatman™ Quantitative Filter Paper: Grade 42 Circles

Filters and retains extremely small particles. Whatman™ Quantitative Filter Paper: Grade 42 Circles are suitable for processes that require ashing.

Manufacturer:  Whatman™ 1442320

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Catalog No. 09-856D


 

Specifications

Description

Paper, Filter; Whatman; Quantitative; Grade 42; Ashless circles; Part 2; Particle retention: 2.5μm; Filtration speed: Herzberg: 1870 seconds; 320mm dia.

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.
  • Ashless: 0.007% ash maximum
  • Fine (2.5 µm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation
  • Herzberg filtration speed of 1870 s
  • Commonly used as a calcium carbonate filter

Description & Specifications

Specifications

100Pack
High-quality Cotton Linters
Circle
Fine
Highly retentive, for very fine precipitates. Normal loading; limited wet strength. Laboratory standard for critical gravimetric analysis
42
2.5μm
200μm
320mm
Slow
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