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Filter Papers
7 cm QUANT. (Ashless), Medium filtration speed / Medium porosity.
Whatman grade 40 equivalent. Ash content approx. 0.01% (negligible). Pre-washed 2x in acid and rinsed in dH2O. For quantitative work (gravimetric analysis).
Pack of 100 circles.
#FP2027.......$4.99 / pack
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7 cm QUAL. (Low-Ash), Slow filtration speed / Fine porosity.
Ash content 0.15%. For qualitative work with fine crystalline precipitates.
Pack of 100 circles.
#FP1037 ..... $2.64 / pack
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7 cm QUAL., Medium filtration speed / Medium porosity. Ash content 0.15%. The most popular grade for all-around qualitative work.
Pack of 100 circles.
#FP1027 .... $2.64 / pack
9 cm QUANT. (Ashless), Medium / Medium.
Whatman grade 40 equivalent. Ash content approx. 0.01% (negligible). Pre-washed 2x in acid and rinsed in dH2O. For quantitative work (gravimetric analysis).
Pack of 100 circles.
#FP2029 .........$6.99 / pack
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9 cm QUAL. (Low-Ash), Slow / Fine.
Ash content 0.15%. For qualitative work with fine crystalline precipitates.
Pack of 100 circles.
#FP1039 .... $3.84 / pack
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9 cm QUAL. (Low-Ash), Medium / Medium.
Most popular grade for all-around lab work. Pack of 100 circles.
#FP1029 .... $3.84 / pack
Vacuum Pumps for filtration are on their own page
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Related items:
Additional types of filter paper are available in the Filter Flasks section