Whatman™ Grade 42 Quantitative Filter Paper

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

Brand: Whatman™

Manufacturer Part Number: 1442-320

X100 GR. 42 32.0CM/100/PKFILTER

UNSPSC: 41120000

Code: A0

Additional Details:
Additional Details: Weight: 0.86000kg

Product Code. 11330474

Quantity Price
1 £148.50 / Pack of 100
Estimated Shipment
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Description and Specification


Quantity 100Pack
Grade 42
Material High-quality Cotton Linters
Pore Size (Metric) 2.5μm
Format Circle
Thickness (Metric) 200μm
Porosity Fine
Diameter (Metric) 320mm
For Use With (Application) Highly retentive, for very fine precipitates. Normal loading; limited wet strength. Laboratory standard for critical gravimetric analysis
Flow Rate Slow

Quantitative papers with fine retention
  • 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