Whatman 1441-055 Quantitative Filter Paper Circles, 20 Micron, Grade 41, 55mm Diameter (Pack of 100)
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<b>[Product Information]</b><br>
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<li>Diameter: 5.5cm</li>
<li>Retention: 20µm</li>
<li>Fastest ashless filter paper</li>
<li>Recommended for analytical procedures involving coarse particles or gelatinous precipitates (iron or aluminium hydroxides)</li>
<li>Used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates</li>
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