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 910-0907-EU-R GilAir-Plus Basic 3-Pump Starter Kit, Euro cord Price on request 360-0162-01 Go-Cal Manual Price on request 297-0012-01 USB Communications Cable for Nephelometer Price on request