Filter Papers, Qualitative Standard Grade 4 (Whatman)
Grade 4: 20-25 µm with excellent retention of coarse particles and gelatinous precipitates. Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
Description/Item No. | Diameter | Mfr. Item No. | Qty. | Your Cost/Qty | Purchase | ||||||
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Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-35
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5.5 cm | 1004-055 | Pack/100 |
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Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-36
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7 cm | 1004-070 | Pack/100 |
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Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-37
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9 cm | 1004-090 | Pack/100 |
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Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-38
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11 cm | 1004-110 | Pack/100 |
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Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-39
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12.5 cm | 1004-125 | Pack/100 |
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Filter Papers, Qualitative Standard Grade 4 (Whatman)
3255-40
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15 cm | 1004-150 | Pack/100 |
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