
Nitric Oxide (NO) / NOx Calibration Gas Mixture
- PPB & PPM NO/NOx NIST traceable standards
- EPA Method 7E & Part 75 CEMS calibration ready
- Proprietary treatment ensures reactive gas stability
NIST Traceable Gas Standards
ISO 17025 Accreditation
SpecGas Inc. offers a comprehensive range of precision-blended specialty gas mixtures and calibration gases for industrial, environmental, research, and semiconductor applications. Products include reactive, toxic, hydrocarbon, noble, and atmospheric gases, all produced in-house with NIST-traceable standards and proprietary cylinder treatment for maximum stability and accuracy.
































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SpecGas Inc. blends a broad range of specialty gases including reactive and toxic gases (H2S, NH3, HCN, CO, HCl, SO2, NO), hydrocarbon gases (CH4, C2H6, C3H8, C4H8), noble and rare gases (He, Ne, Ar, Kr, Xe), atmospheric gases (N2, O2, CO2), VOCs (formaldehyde, acetone, DMS), and excimer laser gas mixtures (ArF, KrF, KrCl). Custom multi-component blends are also available.
Talk to our experts for custom solutions and tailored guidance.

NIST-traceable calibration gases for CEMS, EPA stack testing, ambient air quality networks, and regulatory compliance.

Excimer laser gas mixtures, process gas calibration, and high-purity rare gases for photolithography and semiconductor fab.

Calibration and bump testing gases for confined space monitors, 4-gas detectors, and workplace exposure limit compliance.

High-purity, NIST-traceable specialty gases for GC, FTIR, GC-MS, and precision analytical instrument calibration in labs.
Talk to our experts for custom solutions and tailored guidance.
All specialty gas mixtures are blended in-house using state-of-the-art equipment, delivering industry-leading lead times and rush service when your schedule demands it.
SpecGas's unique internal cylinder treatment process and proprietary blending techniques ensure reactive gas mixtures remain stable with extended shelf life and NIST-traceable accuracy.
Founded by a research chemist with roots in Germany's largest specialty gas manufacturers, SpecGas brings decades of deep technical knowledge to every complex or hard-to-source gas blend.
Submit your requirements and a SpecGas specialist will respond promptly with pricing, lead times, and technical guidance for your application.
For immediate assistance, feel free to give us a direct call at (215) 443-2600. You can also send us a quick email at website-inquiries@specgasinc.com.
For immediate assistance, feel free to give us a direct call at (215) 443-2600. You can also send us a quick email at website-inquiries@specgasinc.com.