RKI GX-3R / GX-3R Pro 81-GX3RHSCO-LV Calibration Kit, 34AL cyl H2S 25 ppm / CO 50 ppm / CH4 50% LEL / O2 12% in N2
RKI GX-3R / GX-3R Pro 81-GX3RHSCO-LV Calibration Kit, 34AL cyl H2S 25 ppm / CO 50 ppm / CH4 50% LEL / O2 12% in N2, regulator 0.25 LPM, case & tubing
