Calibration Gas Cylinders and Detection Monitors

Calibration gas mixes vary by application. Common examples include methane at 50% LEL in nitrogen for combustible gas detectors, 25 ppm CO and 10 ppm H2S in nitrogen for 4-gas confined space monitors, or multi-component blends for CEMS. Balance gases such as nitrogen, air, or inert gases are used to bring the mixture to 100%. SpecGas blends custom formulations to exact customer specifications.

SpecGas offers calibration gases in disposable steel and aluminum cylinders, refillable high-pressure aluminum and steel cylinders, and nickel-plated cylinders for reactive and corrosive gases. Net gas volumes range from 17 liters to 250 ft³ (refillable) or up to 2,000 liters gas phase volume, covering laboratory, field, and bulk industrial use cases.

Yes. All SpecGas calibration gas standards are produced with NIST Traceable traceability using gravimetric blending and proprietary techniques. This ensures that every mixture meets national and international accuracy requirements and can support regulatory compliance for EPA Methods, OSHA monitoring, CEMS calibration, and ISO 17025 accreditation-supported laboratory programs.

Yes. SpecGas specializes in custom multi-component specialty gas blends, including difficult reactive and toxic gases such as formaldehyde, hydrogen cyanide, phosphine, chlorine, and hydrogen sulfide. Concentration ranges, balance gases, cylinder types, and tolerances are all configurable to customer specifications. SpecGas can often produce mixtures that larger suppliers cannot.

Industry best practice and OSHA guidelines recommend bump testing gas detectors before each use to verify sensor response, and full calibration whenever a bump test fails or after exposure to high concentrations. Manufacturers typically specify calibration intervals ranging from 30 to 180 days. Calibration frequency may also be dictated by regulatory requirements such as 40 CFR Part 75 for CEMS or EPA Protocol Gas procedures.

SpecGas offers the SpecGas Stability Guarantee on reactive gas mixtures. If a customer receives a mixture and disputes the stated results, SpecGas will immediately remake and re-ship a replacement at no additional cost. The original cylinder is returned to SpecGas for re-analysis and a resolution discussion. This guarantee applies to all custom specialty gas blends produced by SpecGas.