Filter, Tissue Quartz, (99.90% retention of 0.3µm Back Catalog number: GF37TQ Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended GF25080 Filter, MCE, 0.8µm, 25mm, PCM, No Grid, 100/Pack Price on request 400692 Battery Pack, NiMH for old style Gilibrator Price on request 811-9918-02 Go-Cal AC Adapter NEMA, 100-240V Price on request