Product Reviews

RKI GX3R review — one of the smallest wearable 4-gas monitors (LEL/O2/H2S/CO), factory-calibrated with a certificate. Worth it? Our verdict.

The RKI GX3R 4 Gas Monitor — LEL, O2, H2S, CO (Factory Calibrated) is a personal gas detector from RKI Instruments, listed at $640.00. This review restates what the product page documents, places it in its gas detection lane, and points to the ranked guides for the head-to-head field.