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Z241547 Aldrich

Whatman® quantitative filter paper, hardened ashless, Grade 540

circles, diam. 70 mm, pack of 100

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Properties

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, 1540-070
parameter   200 sec/100 mL speed (Herzberg)
  7 psi wet burst
diam.   70 mm
thickness   160 μm
ash   ≤0.006%
pore size   8 μm (Particle retention)
basis weight   85 g/m2

Description

General description

These are the hardened ashless supreme 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 540: 8 μm (medium filter paper)

The general purpose hardened ashless filter paper with medium retention and flow rate. Extremely pure and strong with a hard surface. High chemical resistance to strong acid and alkali. Frequently used in the gravimetric analysis of metals in acid/alkali solutions and in collecting hydroxides after precipitation by strong alkalis.

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Whatman is a registered trademark of GE Healthcare

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