Specifications include, but are not limited to: Nitrogen shall be a gaseous product, oil tolerant, and suitable for use in gas and ion chromatography. It shall be not less than 99.5% pure, of low moisture content, and the filling pressure to 2200 psi at 70 degrees fahrenheit. Medical oxygen will be of the grade and purity as specified by the U. S. Food and Drug Administration (FDA) and the Texas Department of State Health Services (TDSHS) for use as a prescription drug. The Supplier must maintain a current “Drug Manufacturer License” from both TDSHS and the federal agencies as appropriate for providing medical oxygen supplies to an end user and to a manufacturer. Oxygen and breathing air cylinders shall be tested in accordance with cylinder manufacturer’s requirements/recommendations and shall comply with all applicable Department of Transportation (DOT), Compressed Gas Association (CGA) and National Fire Protection Association (NFPA) guidelines, standards, and/ or recommendations.