Nitrogen Gas Mixes and Industrial Uses

NIST-traceable means the concentration of each gas blend is verified against standards maintained by the National Institute of Standards and Technology. This chain of traceability ensures your measurements are accurate, defensible, and compliant with EPA, OSHA, and other regulatory frameworks that require documented calibration documentation for gas detectors and analytical instruments.

SpecGas offers nitrogen-balanced calibration mixtures from sub-PPB levels up to 10% by volume depending on the target gas. For example, formaldehyde is available from 1 to 100 ppm, H₂S from 300 ppb to 10%, and HCN from 100 ppb to 10%. Custom concentrations outside standard ranges are available upon request through our in-house blending service.

Yes. SpecGas specializes in custom gas blending to exact customer specifications, including multi-component mixtures, unusual gas combinations, and concentration tolerances tailored to your instrument or regulatory requirement. All custom blends are produced in-house using gravimetric blending with proprietary techniques and include NIST traceability documentation.

SpecGas supplies nitrogen-balanced gas mixtures in disposable aluminum and steel cylinders, refillable high-pressure aluminum and steel cylinders, and nickel-plated cylinders for highly reactive gases. Sizes range from 5.9L internal water volume up to 250 ft³ net gas volumes, with disposable options ideal for field and overseas applications.

Stability depends on the specific analyte gas and concentration level. SpecGas uses a proprietary internal cylinder treatment process designed to extend shelf life significantly beyond industry norms for reactive gas mixtures. Every order is backed by the SpecGas Stability Guarantee — if a mixture does not meet stated specifications, SpecGas will immediately remake and reship a replacement.

Many EPA methods require NIST-traceable calibration gases balanced in nitrogen, including EPA Methods 6C, 7E, 10, 25A, 26A, and 320 for stack emissions, as well as 40 CFR Part 75 Acid Rain Program CEMS calibration, MATS compliance, and OSHA workplace exposure monitoring standards for gases such as CO, H₂S, NH₃, SO₂, HCl, HCN, and Cl₂.