Whatman quantitative filters are designed for gravimetric analysis and the preparation of samples for instrument
analysis. They are available in three formats designed for specific requirements.
• Ashless: 0.007% ash nominal for Grades 40 to 44 and a typical of 0.01% for the 589 Grades – very pure
filters suitable for a wide range of critical analytical filtration procedures.
• Hardened low ash: 0.015% ash nominal – treated with a strong acid to remove trace metals and produce
high wet strength and chemical resistance. These filters are particularly suitable for Büchner filtration where
the tough, smooth surface of the filter makes it easy to recover precipitates.
• Hardened ashless: 0.005% ash nominal – acid hardened to give high wet strength and chemical resistance
with extremely low ash content. The tough surface makes these filters suitable for a wide range of critical
filtration procedures.
Quantitative Filter Papers-Grade 41: 20μm
10 in stock
Grade 41: 20 μm*
The fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates (e.g. iron or aluminum hydroxides).
Also used in quantitative air pollution analysis as a paper tape for impregnation when
determining gaseous compounds at high flow rates.
Rs.1,800.00 – Rs.50,490.00
| Variation Codes | 1441-047, 1441-055, 1441-090, 1441-110, 1441-125, 1441-150, 1441-185, 1441-240, 1441-917 |
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