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This is a new, old-stock disposable cylinder of Airgas Specialty Gases BAR-97 Calibration Gas. This specific mixture is used for the precision calibration of automotive emissions and smog testing equipment. • Brand: Airgas Specialty Gases. • Part Type: TA1 Disposable Cylinder. • Gas Mixture: Low-Range BAR-97 with Nitric Oxide (NO). • Composition: Certified blend containing Nitrogen, Carbon Dioxide, and Nitric Oxide. • Classification: UN 1956 Compressed Gas, n.o.s. (Non-Flammable). • Condition: Includes new in original box and protective valve packaging. • Compliance: DOT-39 NRC 260/325 M1005 specifications.