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WatchGas Gas Monitor Calibration Service RKI Gas Detection Parts photoionization detectors MEM01 N9680S photoionization detectors A bump test is a brief go no go check that exposes each sensor to a known gas concentration and confirms the alarm fires — typically run daily before use but manufacturer guidance and most safety programs specify at minimum a bump test before each use and a full calibration at regular intervals — typically every 3 to 6 months SST4 Micro Mini Pump
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