Whatman™ Quantitative Filter Papers, Hardened Ashless Grades, Grade 540, Whatman products (Cytiva)

Supplier: Cytiva
1540-110 1540-125 1540-150 1540-321 1540-324 1540-042 1540-090 1540-185 1540-090 1540-185 1540-240 1540-240 1540-320 1540-055 1540-320 1540-055 1540-110 1540-125 1540-150 1540-321 1540-324 1540-042
28297-370PK 147.28 CAD
28297-370 28297-372 28297-374 28495-023 28495-045 70240-064 CA28297-368 CA28297-376 28297-368 28297-376 CA11013-738 10035-282 10147-890 10147-986 CA10147-890 CA10147-986 CA28297-370 CA28297-372 CA28297-374 CA28495-023 CA28495-045 CA70240-064
Whatman™ Quantitative Filter Papers, Hardened Ashless Grades, Grade 540, Whatman products (Cytiva)
Filters Filter Papers Quantitative Filter Paper
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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