GASCO Calibration Gas 34es-421-15CO2-2% Mixture Carbon Monoxide 100 PPM, Carbon Dioxide 2% Volume, Hydrogen Sulfide 15 PPM, Methane 2.5% (50% LEL), Oxygen 18%, Balance Nitrogen Contained in a 34 Liter Factory Refillable ecosmart Disposable Aluminum Cylinder.

Features:

• For Use with Any and All Gas Detectors
• Cylinder Connection C-10
• Calibration Certificate NIST
• Made in the USA
• Width: 3.10 (in)
• Height: 10.64 (in)
• Depth: 3.10 (in)

Mixture:

• Carbon Monoxide (CO): 100 PPM
• Carbon Dioxide (CO₂): 2% Volume
• Hydrogen Sulfide (H₂S): 15 PPM
• Methane (CH₄): 2.5% (50% LEL)
• Oxygen (O₂): 18%
• Nitrogen (N₂): Balance