Whatman Grade 1 Qualitative Filter Paper covers a wide range of laboratory applications, frequently used for clarifying liquids. It is widely used in education for teaching simple qualitative analytical separations.
These filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis. The classic general-purpose ashless filter paper with medium speed and retention.
Whatman Grade 40 high-purity filters are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications.
With the finest retention of all Whatman ashless filter paper grades, Grade 42 is designed for gravimetric analysis and sample preparation for instrumental analysis.
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.
Whatman Glass Microfiber Filters offers fine particle retention and high flow rate, as well as good loading capacity. Grade GF/A is used for high-efficiency general purpose laboratory filtration, including water pollution monitoring of effluents, for filtration of water, algae and bacteria cultures, foodstuff analyses, protein filtration and radio immuno assay of weak ß emitters.
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