RKI Instruments H2S/CO/Isobutane 50% LEL/O2 81-0158RK-04

RKI Instruments H2S/CO/Isobutane 50% LEL/O2 Calibration Gas Mixture Premium calibration gas blend designed for multi-gas detector testing and verification. This 34-liter aluminum cylinder contains a precisely formulated mixture: H2S 25 ppm, CO 50 ppm, isobutane 50% LEL, and O2 12% in nitrogen. Ideal for maintaining accuracy and compliance in safety monitoring equipment. Perfect for technicians and safety professionals who need reliable, traceable calibration standards. Ensures your gas detection instruments perform at peak sensitivity and specificity across multiple hazardous gas parameters. Note: This item ships via UPS Ground due to HazMat restrictions and isn't available for expedited shipping. Calibration gas is not returnable. Please check your selection carefully before ordering. Compatible with the following: RKI GX-6100 RKI SDM-6100 Part Number: 81-0158RK-04