Product Review
Multiple component portable calibration gas mix of: 25 PPM Hydrogen Sulfide, 100 PPM Carbon Monoxide, 2.5% (50% LEL) Methane, 19% Oxygen, Balance Nitrogen in 29 Liter Aluminum Cylinder. Use to calibrate any gas detector requiring the specified gas concentration and mixture. Manufactured under ISO:9002 quality standards by NorLab Specialty Gases with NIST traceability certification.











