Certified EPA Protocol Gas Standards for RATA

EPA Protocol gas is a gaseous calibration standard prepared, assayed, certified, and documented under EPA traceability requirements for emissions testing and monitoring. It is commonly used for stack testing, CEMS calibration, RATA work, performance audits, and cylinder gas audits. These standards help verify analyzer response for pollutants such as NOx, SO2, CO, CO2, O2, THC, HCl, HF, NH3, and other regulated compounds.

The EPA traceability protocol defines how gaseous calibration standards are prepared, analyzed, compared to reference standards, certified, and documented. It establishes procedures for assigning concentrations, uncertainty, expiration, and traceability to recognized reference materials. For compliance users, the protocol helps ensure calibration gases are defensible for EPA reference methods, CEMS QA/QC, RATA testing, performance audits, and regulatory recordkeeping.

SpecGas Inc. supplies calibration gases used with many EPA stack testing and monitoring methods, including Methods 3A, 6, 7E, 10, 16, 18, 25A, 26A, 29, and 320, as well as CEMS Performance Specifications. Applications include NOx, SO2, CO, THC, oxygen, carbon dioxide, acid gases, formaldehyde, ammonia, VOCs, and other method-specific analytes.

Yes. SpecGas Inc. produces NIST traceable gas standards and provides documentation to support traceability and certification needs. Depending on the order and application, customers may receive a Certificate of Analysis, production records, and related quality documentation. This helps emissions teams maintain audit-ready files for stack testing, CEMS calibration, RATA programs, and environmental compliance reporting.

Yes. SpecGas Inc. can blend custom gas mixtures to specified concentrations, balance gases, cylinder sizes, valve outlets, pressure ratings, and analytical tolerances. This is especially useful when a testing plan requires low-level standards, intermediate checks, span gases, or unusual components. The company’s in-house blending capability supports both routine and difficult-to-produce EPA-related calibration gas requirements.

Common EPA Protocol and emissions calibration standards include NOx, NO, NO2, SO2, CO, CO2, O2, THC, HCl, HF, NH3, formaldehyde, VOCs, and mercury-related standards depending on the analyzer and method. SpecGas Inc. also supplies zero gas, span gas, intermediate concentration gases, and specialty mixtures for FTIR, FID, NDIR, chemiluminescence, and GC-based systems.

Reactive gases require careful cylinder preparation because components such as ammonia, hydrogen chloride, chlorine, hydrogen cyanide, phosphine, and formaldehyde can adsorb, react, or decay over time. SpecGas Inc. uses proprietary blending methods and internal cylinder treatment expertise developed through decades of specialty gas experience. The SpecGas Stability Guarantee applies to reactive gas mixtures where specified.

Certified standards can include a Certificate of Analysis, concentration data, balance gas information, cylinder details, traceability references, expiration information, and production records where applicable. Documentation requirements should be confirmed when ordering so the final package supports your stack test plan, CEMS QA/QC procedure, RATA file, performance audit, or environmental compliance records.