Quantitative filter papers, hardened ashless grades, grade 540, Whatman™

Dodavatel: Whatman (GE Healthcare)
512-0354EA 1330 CZK
512-0354 512-0632 512-0631 512-0630 512-0353 512-0355 512-0356 512-0633 512-0629 512-0357 512-0425
Quantitative filter papers, hardened ashless grades, grade 540, Whatman™
Filtry Papíry filtrační Papír kvantitativní filtrační
Cytiva's Whatman Grade 540 is a high-purity, acid-treated cellulose lab filter paper. Mechanically strong Grade 540 is well suited for quantitative or gravimetric analysis of strongly acidic or alkaline samples.

  • Acid-treated for high wet-strength
  • Extremely low ash content (0,006% ash maximum)
  • Nominal particle retention of 8 µm
  • Medium flow rate (Herzberg filtration speed 200 s)
  • High chemical resistance to strong acid and alkali suspensions

Cytiva's business offers hardened ashless filter paper for a variety of precipitate sizes. Along with general filtration Grade 540, the range includes Grade 542 for retention of fine precipitates and Grade 541 for fast filtration. All three grades are designed for use in gravimetric analysis.

Cytiva's hardened, ashless Grade 540 lab filter paper is frequently used as a gravimetric filter during analysis of metals in acidic or alkaline solutions and in the collection of hydroxides. The acid-treated surface prevents tearing during filtration and allows the user to scrape precipitates from the paper.

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