Filter, Tissue Quartz, (99.90% retention of 0.3µm Back Catalog number: GF25TQ Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 375-0009-01 Carrying Case for Nephelometer Price on request 811-1004-04 PM-4.0 Impactor Kit, Replacement for Models 810-10 Price on request 801012-100 Aircon-2 DC Programmable Area Air Sampling Pump, ( Price on request