Filter, 37mm, 0.4µm, Polycarbonate, Plain White, 1 Back Catalog number: GFPC4537 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 811-0907-01-R Dock to PC, usb cable (w/inductor), for Com versio Price on request 810-0801-01 Gilian 5000 Pump Kit UL ATEX, Pump Only, No Charge Price on request 375-0009-01 Carrying Case for Nephelometer Price on request