Oxygen (O₂) 20.9% Calibration Gas – Nitrogen Balance (Ultra Zero Air)

Specifications and cylinder appearance may vary by cylinder size and production lot.

Common Uses: Calibration, zeroing, testing, and verification of compatible gas detection and analytical instruments requiring a 20.9% Oxygen Ultra Zero Air reference.

Always verify that this Ultra Zero Air mixture is appropriate for your specific instrument and application. Verify the required gas composition, cylinder connection, regulator, flow rate, and instrument requirements, and follow the instrument manufacturer's calibration and testing procedures.

Hazardous Material Shipping

Calibration gas cylinders are regulated for transportation as hazardous materials and must be shipped in accordance with applicable carrier and hazardous-material regulations. Available shipping methods and charges may vary based on cylinder size, quantity, destination, and applicable HazMat requirements.

Lead Time

Please allow approximately 3 business days for order processing prior to shipment. Lead times may vary depending on availability and order quantity.

Non-Returnable Product

Calibration gas is non-returnable. Because calibration gas is a certified gas mixture with a limited shelf life, cylinders cannot be returned or exchanged after shipment.

Please verify the gas composition, grade, cylinder size, and connection before placing your order.

Important Regulator Compatibility: The cylinder connections differ by size. The 34L cylinder uses a CGA-600 connection, while the 103L cylinder uses a C-10 connection. Verify that your regulator matches the cylinder connection selected before ordering.

Not sure which cylinder or regulator you need?
Contact CPS Calibrations before ordering at 865-900-8844 or info@cpscalibrations.com. We can help verify compatibility with your application.