Filter, MCE, 0.45µm, 37mm, 100/Pack Back Catalog number: GF37450 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 360-0138-01 Operation Manual/Software CD for Nephelometer, TSP Price on request 800485-111-01 GilAir-3 R Pump, No Battery Price on request 811-0945-02-R GilAir Plus Basic or DL to STP BlueTooth and Motio Price on request