Filter Paper, Quantitative, Hardened Ashless, Grade 540, Cytiva Whatman™
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Filter Paper, Quantitative, Hardened Ashless, Grade 540, Cytiva Whatman™
The supreme quantitative filter paper. These are acid hardened, which reduces ash to an extremely low level. High wet strength and chemical resistance. 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 - 8µm particle retention. 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.