Certified gas mixtures from our ISO 17025 & 17034 accredited laboratory in Miami. EPA Protocol, NIST-traceable, sulfur, reactive, medical, laser & hydrocarbon blends — all produced, analyzed, and certified in-house.
WSM manufactures certified gas mixtures at our ISO 17025 & 17034 accredited laboratory. EPA protocol gas, NIST-traceable primary standards, sulfur and reactive blends, multi-component mixtures (2 to 12+ gases), medical gas mixtures, laser gas mixtures, and calibration gas mixtures — all produced, analyzed, and certified in-house. From ppm to ppb concentrations. Custom blends in 3-7 business days.
The only laboratory in South Florida with ISO/IEC 17025, ISO 17034, and EPA PGVP certifications simultaneously. Verified at pjlabs.com
Certificate L25-1002 — Chemical Testing Laboratory
Accredited Scope:
Accreditation No. 125017 · Issued Dec 29, 2025 · Expires Mar 31, 2028
Certificate L25-1003 — Reference Material Producer
Accredited Scope:
Accreditation No. 125017 · Issued Dec 29, 2025 · Expires Mar 31, 2028
Vendor Y12026 — Part 75 Protocol Gas Verification Program
Program Scope:
40 CFR Parts 60, 72, 75 · Participant #30 · Vendor Y12026 · January 2026
PJLA #125017 · ILAC-MRA Recognized — Our accreditation is internationally recognized through the ILAC Mutual Recognition Arrangement, accepted in 100+ countries. Verify our accreditation at pjlabs.com
Each mixture manufactured using gravimetric and volumetric precision methods, analyzed with multiple NIST-traceable analytical technologies, and delivered with a full Certificate of Analysis. From % down to ppm and ppb concentrations — binary through 12+ component blends.
Manufactured based on the EPA "Traceability Protocol for Assay and Certification of Gaseous Calibration Standards" (Document EPA/600/R-12/531, May 2012). Used for calibrating and auditing Continuous Emissions Monitoring Systems (CEMS) under 40 CFR Parts 60, 72, and 75. WSM is a participant in the EPA Protocol Gas Verification Program (PGVP). Every protocol gas cylinder is NIST-traceable with expanded uncertainty stated at k=2 (95% confidence level).
As an ISO 17034:2016 accredited Reference Material Producer, WSM manufactures Certified Reference Materials (CRMs) with full metrological traceability to NIST Standard Reference Materials (SRMs). The traceability chain is documented from NIST Primary Standards → SRMs → NTRMs/GMIS → WSM certified standards. Expanded uncertainty stated at k=2 (95% confidence level).
Traceability Hierarchy: NIST Primary Standards → SRMs → NTRMs / GMIS → WSM Certified Standards → End User
Complex gas mixtures containing 2 to 12 or more components in a single cylinder. Each component independently verified by analytical measurement against NIST-traceable reference standards. Available from % down to ppm and ppb concentrations in any balance gas. Gravimetric preparation ensures accuracy; multi-technology analysis ensures every component meets specification.
Sulfur compounds are among the most challenging gases to manufacture accurately. These reactive molecules adsorb onto untreated cylinder walls, causing concentration drift. WSM uses aluminum cylinders with a proprietary internal treatment to ensure long-term concentration stability. Critical for natural gas odorization quality control, pipeline monitoring, petrochemical analysis, and environmental sulfur compliance.
Reactive and corrosive gas mixtures require expert handling — specialized cylinder materials (aluminum with proprietary internal treatment), dedicated fill manifolds, and analytical techniques designed for reactive species. WSM's laboratory has the expertise, equipment, and safety protocols to manufacture these challenging blends accurately with documented stability.
Cylinder Material: Aluminum (treated interior) · Balance Gases: N₂, Air, Ar, He · Documentation: COA + SDS + HAZMAT shipping docs
Calibration and audit gas standards for environmental compliance. From stack-level CEMS applications to ppb-level ambient air quality monitoring. Used by power utilities, refineries, cement plants, waste incinerators, and environmental consultants for EPA regulatory compliance reporting.
Medical gas mixtures manufactured to USP and cGMP standards for healthcare and clinical laboratory applications. Full documentation package for regulatory compliance. Used in hospitals, pulmonary function labs, blood gas labs, and clinical research facilities.
Precision gas mixtures for industrial and scientific laser systems. Composition accuracy is critical — even small variations affect beam quality, output power, and tube longevity. WSM manufactures laser gas mixtures with tight analytical tolerances for CO₂ lasers, excimer lasers, HeNe lasers, and ion lasers.
Calibration standards and process simulation blends for the petrochemical industry. Natural gas composition analysis (C₁ through C₆+), refinery process gas chromatograph calibration, BTU/heating value verification, FID fuel gases, and LEL calibration blends. Used globally by oil & gas producers, LNG operators, pipeline companies, and petrochemical refineries.
Calibration and bump test gas mixtures for portable and fixed gas detection systems. Designed for industrial safety applications — confined space entry, area monitoring, personal protection, and regulatory compliance. Available for all major detector brands with 184+ competitor cross-references.
Every mixture is analyzed using multiple NIST-traceable calibrated instruments. Our ISO 17025 accredited methods ensure accuracy and reproducibility across all concentration ranges.
Every custom mixture follows our 5-step certified manufacturing process:
Supplier certs verified, source gas purity confirmed
Cleaning, evacuation, proprietary treatment for reactive gases
Gravimetric prep, NIST-traceable weights
Multi-technology verification, COA issued
DOT labeled, SDS included, HAZMAT compliant
WSM manufactures gas mixtures from 2 components (binary) up to 12 or more components in a single cylinder. Each component is independently verified by analytical measurement. Contact us with your full specification and we'll confirm feasibility and lead time.
EPA Protocol gases are calibration gas standards manufactured based on the EPA "Traceability Protocol for Assay and Certification of Gaseous Calibration Standards" (Document EPA/600/R-12/531, May 2012). This protocol establishes the analytical and statistical procedures for certifying gases used to calibrate Continuous Emissions Monitoring Systems (CEMS) under 40 CFR Part 72 and the Clean Air Act. WSM is a participant in the EPA Protocol Gas Verification Program (PGVP) — our protocol gases are NIST-traceable with expanded uncertainty stated at k=2.
Sulfur compounds (H₂S, SO₂, COS, mercaptans) are reactive and can adsorb onto cylinder walls, causing concentration loss over time. WSM uses aluminum cylinders with a proprietary treatment to create a stable internal surface. This ensures the labeled concentration remains accurate throughout the full shelf life of the cylinder.
Turnaround depends on the complexity of your mixture, but we have mixtures that can ship as fast as 3-7 business days. Contact us for more information based on your specific requirements.
Yes. WSM manufactures medical gas mixtures to USP and cGMP standards including lung diffusion (DLCO) test gas, blood gas calibration mixtures, aerobic and anaerobic culture gas, and anesthesia verification standards. Full documentation for regulatory compliance and FDA certification available.
NIST-traceable means the calibration of our analytical instruments and reference standards can be traced through an unbroken chain of comparisons back to a NIST Standard Reference Material (SRM). As an ISO 17034 accredited Reference Material Producer, WSM documents this full traceability chain and reports the expanded measurement uncertainty at k=2 (95% confidence level).
Yes. Send us the competitor's part number, COA, or specification sheet and we'll manufacture an equivalent or identical mixture at our lab. With 184+ competitor cross-references already in our system and the ability to manufacture custom blends, we can match virtually any specification. Contact us with your requirements.
