INTERMOUNT-CAL-QUAD-120L-Gaz d'étalonnage 120L - 25 ppm H2S/100 ppm CO/50 % LE

Good value for a quad mix
We go through a lot of calibration gas in oilfield operations and this one has held up well. Regulator connection was smooth and pressure output steady. Will reorder.

Accurate and dependable calibration gas
Used this for calibrating our site monitors before a safety audit. Readings lined up exactly where they should. Cylinder was well packaged, no leaks or valve issues.

Consistent mix and reliable for bump tests
We run daily bump tests on multi-gas monitors and this quad mix has been very consistent. No issues with concentration drift and shelf life has been solid. Shipping was quick too.