Model AP-20S Gas Detection Pump Kit Back Catalog number: 830-0001-01 Manufacturer: SENSIDYNE Availability: In the manufacturer's stock Price on request - + Recommended 780-0015-05-R Calibrator cable (Gilibrator 2-USB and Gilibrator Price on request GF25TQ Filter, Tissue Quartz, (99.90% retention of 0.3µm Price on request 800518 Low Flow Module, Blue, GilAir-3/GilAir-5 Constant Price on request