
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

Precision regulators for disposable calibration gas cylinders, plus replacement tubing and cal cups. Fixed-flow for pumped or diffusion monitors; demand-flow for pumped units and docking stations.
Tell us quantity, sizes and delivery city. Volume pricing and custom branding are confirmed on a written quote.
Precision regulators for disposable calibration gas cylinders, plus replacement tubing and cal cups. Fixed-flow for pumped or diffusion monitors; demand-flow for pumped units and docking stations. • Fixed-flow 0.5 or 1.0 LPM, or demand-flow • C-10 / 5/8-18 UNF inlet; match your cylinder thread • Brass or stainless body with built-in pressure gauge • Tygon or PTFE-lined tubing for reactive gases (H2S) • Cal cups and adapters per monitor model Brands we quote: Calgaz · MSA. 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