Pollution Protection Systems Mumbai Pvt. Ltd offers Fog Resistant Gas Detector. Pollution Protection Systems Mumbai Pvt. Ltd is an ISO 9001: 2000 accredited company. The Fog Resistant Gas Detector is available with Control of immaculacy of optics and is used for continuous measurement of concentration levels of methane, propane and oil vapours. The Gas Detector can also detect wire break and any type of failure for each detector.