
Fall Protection & Respiratory
4-Gas Calibration Gas - 50% LEL Methane / 18% O2 / 25 ppm H2S / 100 ppm CO, 34-116 L
- Calgaz · MSA · Industrial Scientific
- CH4 2.5% (50% LEL) / O2 18% / H2S 25 ppm / CO 100 ppm / N2 balance

Genuine OEM replacement sensors for portable 4-gas monitors. Replace failed or end-of-life sensors (O2 every 2-3 years, per the maker) and recalibrate after installing.
Tell us quantity, sizes and delivery city. Volume pricing and custom branding are confirmed on a written quote.
Genuine OEM replacement sensors for portable 4-gas monitors. Replace failed or end-of-life sensors (O2 every 2-3 years, per the maker) and recalibrate after installing. • OEM sensors keep the monitor's intrinsic-safety and warranty status • Catalytic or IR LEL, electrochemical O2, H2S and CO (and H2S/CO two-tox) • Matched to MSA ALTAIR, Industrial Scientific Ventis/Radius and Honeywell BW MicroClip/MAX XT • Calibrate after installation (calibration gas: PB-FALL-068) Brands we quote: MSA · Industrial Scientific · Honeywell BW. Brand names are trademarks of their owners. Mays is an independent supplier, not an authorized agent of any brand; current manufacturer models are confirmed on your written quote.

Fall Protection & Respiratory

Fall Protection & Respiratory

Fall Protection & Respiratory

Fall Protection & Respiratory