RKI Cal kit for Gas Tracer configs 65 65H 66 66H 69 & 69H 103L steel cyl 500 ppm CH4 Air, 58L steel 100% vol CH4,103L steel CO CH4 O2, humidifier tube, dem flow reg, case & tubing

RKI Instruments is a North American leader in gas detection, proudly partnered with Japan’s Riken Keiki, the global pioneer in sensor technology, to deliver durable, precision-engineered portable and fixed gas detection systems. Based in Union City, California since 1994, RKI brings decades of experience, every employee averages over 12 years in gas detection, and its senior team combines for more than 140 years, ensuring expert support and quality service. Their celebrated portable range includes ultra-compact multi-gas monitors such as the GX‑3R (the world’s smallest 4‑gas monitor at just 3.52 oz), as well as the GX‑Force, GX‑3R Pro and GX‑6000 with up to 6‑gas detection. For fixed-site safety, the lineup spans controller modules, detector heads, and wireless transmitters, offering real-time alerts and scalable monitoring for industries like oil & gas, wastewater, fire & hazmat, and semiconductor manufacturing. RKI’s rugged, field-ready detectors are designed to stand the test of time— "the last gas detector you’ll ever need”, backed by full calibration support and a commitment to safety that means customers can confidently protect people, property, and compliance every day. [su_menu name="RKI Instruments"]