Zero Air , 20.9% O2, Nitrogen balance

Use Zero air, 20.9% oxygen tp prove accuracy of Oxygen sensors. Use of Zero air is also preferred method to establish baseline sensor stability before calibration of combustible or toxic gas sensors. 

FEATURES AND BENEFITS

• 58 liter
• Portable
• Lightweight
• Interchangeable with 34-liter disposable cylinders
• Increases efficiency
• Recyclable cylinder, eliminates disposal fees and regulatory paperwork

To recycle, peel perforation and strip label to reveal free return shipping label on each bottle.

WARNING: Cancer and Reproductive Harm. https://www.p65warnings.ca.gov/