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47MM Quartz Microfiber Filter, 100/PK | Zefon International
Quartz fiber filter, grade QR-100, 203 x 254mm, 37g/m², 0.38mm thick. No binder, max. temp. 1000 °C. Excellent chemical resistance, biologically inert. Air pollution analysis; sample acidic gases at over 500 °C.
Whatman 1851-047 Quartz Filters, QM-A, 4.7 cm Dia from Cole-Parmer
Quartz Filters Preloaded in 3-piece Clear Plastic Cassettes, for NIOSH 5040, 37 mm, | Order High-Quality Quartz Filters Preloaded in 3-piece Clear Plastic Cassettes, for NIOSH 5040, 37 mm, Products at SKC, Inc.
TE-QMA-47, 47mm Micro-Quartz Filters, Tisch Environmental Inc.