$18.42
10 PCS MQ5 liquefied Gas Methane Gas Sensor Combustible Gas Detection MQ-5Amazon$66.90
PANGAEA Gas Detector Bundle (PHG100 + P-AS8800L) Gas Tester Detector, Combustible Propane Methane Gas Sensor SnifferAmazon$34.99
Natural Gas Detector, Gas Leak Alarm Sensor Butane Methane Gas Monitor, Voice Prompt, Strobe Light Warning, Digital Display (White)…Amazon$60.95
Norlab Methane Gas Cylinder-1971, 99.0% Pure, 17L (P)Global Industrial$175.95
Norlab Methane Gas Cylinder-1971, 2.5%, Bal Air, 103L (J)Global Industrial