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RKI Replacement H2S Sensor ESR A13i H2S Limited Life Multi Gas Monitors use the included test cap Forge FR use the included test cap and hose with an appropriate H2S test gas 2″ W x 2 Verify compatibility with your specific instrument model in the RKI sensor compatibility guide or contact PK Safety at 800 829 9580 before ordering How often should I replace an H2S sensor in a high exposure environment
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