O2 19.0%

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% ( 50% LEL) / Oxygen (O₂) 19.0% / Nitrogen BAL Calibration Gas – 116L

Extended-Use Confined Space Calibration Gas – 116L Cylinder This reduced-oxygen calibration mixture is used to confirm detector readiness prior to entry into ventilation-limited environments. The 19.0% oxygen concentration triggers deficiency...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 19.0% / Nitrogen BAL Calibration Gas – 120L

High Capacity Confined Space Calibration Gas – 120L Cylinder This reduced-oxygen calibration mixture is used by facilities that perform frequent monitor verification and need extended service intervals between cylinder replacement. The 19.0%...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 19.0% / Nitrogen BAL Calibration Gas – 34L

Compact Confined Space Calibration Gas – 34L Cylinder This reduced-oxygen calibration mixture is used when technicians need to confirm monitor readiness immediately before entry into potentially hazardous environments. The 19.0% oxygen level...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 2.5% (50% LEL) / Oxygen (O₂) 19.0% / Nitrogen BAL Calibration Gas – 44L

Portable Confined Space Calibration Gas – 44L Cylinder This reduced-oxygen calibration mixture verifies detector readiness where atmospheric safety cannot be assumed. The 19.0% oxygen concentration confirms deficiency alarm performance while toxic...

Hydrogen Sulfide (H₂S) 40 PPM / Carbon Monoxide (CO) 100 PPM / Methane (CH₄) 50% LEL / Oxygen (O₂) 19.0% / Nitrogen BAL Calibration Gas – 66L

Low Oxygen Four Gas Calibration Gas – 66L Cylinder This calibration mixture is engineered for environments where oxygen deficiency detection must be verified alongside toxic and combustible hazards. The reduced 19.0% oxygen level allows...