
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

OEM replacement filters, sensor screens, sampling probes and tubing for pumped 4-gas monitors. Use them for pre-entry sampling of manholes, vaults and trenches as OSHA 1926.1203 requires.
Tell us quantity, sizes and delivery city. Volume pricing and custom branding are confirmed on a written quote.
OEM replacement filters, sensor screens, sampling probes and tubing for pumped 4-gas monitors. Use them for pre-entry sampling of manholes, vaults and trenches as OSHA 1926.1203 requires. • Genuine OEM parts keep your monitor's warranty and intrinsic-safety approval • Hydrophobic dust/water filters protect the pump and sensors from wet manholes • Rigid and flexible sampling probes for remote sampling before entry • Pump tubing in 10, 25 and 50 ft lengths for sampling at depth • Matched by monitor model: MSA ALTAIR, ISC Ventis/Radius, Honeywell BW MicroClip/MAX XT • Fits a quarterly replenishment schedule 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