Quantitative Filter Paper
Product introduction In the manufacturing process of quantitative Filter Paper, the pulp is treated with hydrochloric acid and hydrofluoric acid and washed with distilled water to remove most of the impurities in the paper fiber. Therefore, the residual ash content after ignition is small, and there is little impact on the analysis results. It is suitable for Precision quantitative analysis. The amount of ash produced after ashing does not exceed 0.0009%. Our filter paper have 3 type. high speed filter paper : filter speed ≤ 35 Second mid speed filter paper : filter speed ≤ 70 S Second slow speed filter paper : filter speed ≤ 140 S Second size:round paper diameter /cm 7 9 11 12.5 15 18 23 27 square/cm*cm 30*30 60*60 90*90 Product specifications
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Qualitative g/m2 |
80.0+-5.0 |
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Separating property (PbSO4) |
The filtrate is transparent, no precipitation |
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Fracture length (km) |
1.9 Min |
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Resistant break-wet (mm spout ) |
140 Min |
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Ash (900℃) |
0.15%Max |
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PH |
6-8 |
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Speckiness (pc/m2) |
(>=0.2-0.3)mm2 |
One grade |
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(>0.3-0.7)mm2 |
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>0.7 mm2 |
One grade |
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Moisture |
7.0+-3.0% |
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