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.

Overview
Brand: Whatman™

Manufacturer Part Number: 1442-055

UNSPSC: 41104929

Code: 69

Additional Details:
Additional Details: Weight: 0.02000kg



Product Code. 10586921

Quantity Price
1 £ 21.25 / Pack of 100
10 £ 17.02 / Pack of 100
Estimated Shipment
05-04-2017
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Description and Specification

Specification

Thickness (Metric) 200μm
Porosity Fine
Material High-quality Cotton Linters
Pore Size (Metric) 2.5μm
Quantity 100Pack
Flow Rate Slow
Diameter (Metric) 55mm
Format Circle
Grade 42
For Use With (Application) Highly retentive, for very fine precipitates. Normal loading; limited wet strength. Laboratory standard for critical gravimetric analysis

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

Documentation