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  • Z241458 - Whatman® quantitative filter paper, hardened ashless, Grade 542

Z241458 Aldrich

Whatman® quantitative filter paper, hardened ashless, Grade 542

circles, diam. 70 mm, pack of 100

Synonym: Whatman filter, filter paper, paper filter



Related Categories Filtration Supplies, Labware, Manufacturer Browser, Paper Filters, Quantitative,
material   circles
  cotton filters (high-quality cotton linters)
packaging   pack of 100
mfr. no.   Whatman Article No., 28418248 (US reference)
  Whatman, 1542-070
parameter   2510 sec/100 mL speed (Herzberg)
  6 psi wet burst
diam.   70 mm
thickness   150 μm
ash   ≤0.006%
pore size   2.7 μm (Particle retention)
basis weight   93 g/m2


General description

These are the supreme hardened ashless quantitative filter papers featuring high wet strength and chemical resistance. These papers are acid hardened, which reduces ash to an extremely low level. Their tough surfaces make them suitable for a wide range of critical analytical filtration operations. Each grade offers a convenient combination of filtration speed and particle retention.

Grade 542: 2.7 μm (slow filter paper)

High retention of fine particles under demanding conditions. Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations.

Other Notes

Global SIAL customers (excluding Japan) can now order any product from the GE Healthcare Life Sciences consumables portfolio (prepack only) using GE′s product numbering system.

The legacy GE Whatman products that use the SIAL "Z" product numbering system will be discontinued and directly replaced with a product number using a "WHA" prefix plus the GE product code. For reference, the legacy "Z" product number is identified as a synonym on the "WHA" product number listing.

This product has been replaced by WHA1542070-ALDRICH | Whatman quantitative filter paper, hardened ashless, Grade 542, circles, diam. 70 mm, pack of 100

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Whatman is a registered trademark of GE Healthcare

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WHA1542070 Whatman® quantitative filter paper, hardened ashless, Grade 542, circles, diam. 70 mm, pack of 100

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