Quantitative filter papers, ashless grades, grade 44, Whatman™

供应商: Whatman products (Cytiva)
Whatman™
WHAT1444-110EA 0 CNY
WHAT1444-110 WHAT1444-070 WHAT1444-240 WHAT1444-090 WHAT1444-150 WHAT1444-185 WHAT1444-125
Quantitative filter papers, ashless grades, grade 44, Whatman™
过滤器 滤纸 Quantitative Filter Paper
Cytiva's Whatman Grade 44 quantitative paper is a thin version of Grade 42 ashless paper. The thinness reduces the overall ash content, making Grade 44 well suited for analyses relying on ash-free dry weight.

  • Accurate ash free dry mass measurements
  • Fine nominal particle retention rating of 3 µm
  • Filtration speed (Herzberg 995 s)
  • Typical thickness of 180 µm

Cytiva's business offers other ashless grades with different particle retention ratings, as well as hardened ashless grades to ensure accurate measurement during analyses of samples that are strongly acidic/alkali.

Fast gravimetric analysis of fine particles. Gravimetric analysis can be time-consuming when filtration of fine particles is required. Because of its reduced thickness, Grade 44 ashless filter paper from Cytiva provides faster filtration of fine particles when compared with thicker papers of similar retention rating, such as Whatman Grade 42 paper.
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