Specifications Material Borosilicate Glass For Use With (Application) Fine porosity and high flow for TSS, cell harvesting, and general laboratory applications Format Circle Particle Retention 1.1µm Thickness (English) 0.012 in. Diameter (English) Outside 4.33 in. Diameter (Metric) Outside 11cm Flow Rate 3.6 cfm/ft2 Grade 161 Temperature (Metric) Max 500°C Thickness (Metric) 0.32mm Temperature (English) Maximum 932°F