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| GX-2012, 72-0290-27-A, 5 sensor, LEL / % volume CH4 / O2 / H2S / CO with alkaline battery pack by RKI Instruments | 
| GX-2012, 72-0290-27-A, 5 sensor, LEL / % volume CH4 / O2 / H2S / CO with alkaline battery pack by RKI Instruments |