Glass Microfiber Filter, Grade 934-AH, Diameter 47mm, Material Borosilicate Glass, Temp. Range Less Than 500 Degrees C, For Use With Total Suspended Solids In Water, Removal of Turbidity and Filtration of Bacterial Cultures, Laboratory Applications, Water Pollution Monitoring, Cell Harvesting, Liquid Scintillation Counting and Air Pollution Monitoring, Package Quantity 100