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  5. Cytiva Whatman™ Quantitative Filter Paper: Grade 42 Circles

Cytiva Whatman™ Quantitative Filter Paper: Grade 42 Circles

Catalog No. p-114405
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Diameter (Metric):
42.5 mm
47 mm
55 mm
70 mm
90 mm
110 mm
125 mm
150 mm
185 mm
240 mm
320 mm
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Catalog No. Diameter (Metric)
09856A 42.5 mm
09805341 47 mm
09855AA 55 mm
09855A 70 mm
09855B 90 mm
09855C 110 mm
09855D 125 mm
09855E 150 mm
09855F 185 mm
09856B 240 mm
09856D 320 mm
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Catalog No. 09856A Supplier Cytiva Supplier No. 1442042
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Description

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

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

Specifications

Airflow Rate 96 s/100 mL/in2
Description Grade 42 Ashless Filter Paper for Instrumental Analysis, 42.5 mm circle (100 pcs)
Filter Type Ashless
Format Disc
Material Cotton Linters
Particle Retention 2.5 μm
Pore Size 2.5 μm
Filtration Speed 1870 sec.
Flow Rate Slow
For Use With (Application) Designed for gravimetric analysis and the preparation of samples for instrumental analysis.For critical gravimetric analysis with the finest particle retention.
Grade Grade 42
Porosity Fine
Quantity 100 Pk.
Thickness (Metric) 200 μm
Type Quantitative Filter Paper
Diameter (English) 16.73 in.
Diameter (Metric) 42.5 mm
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