Experis Gas Mixtures

Význam tématu

Precise and stable calibration gas mixtures are fundamental for ensuring accurate analytical measurements, regulatory compliance and process control across industries such as environmental monitoring, petrochemical processing, automotive emissions testing and pharmaceuticals. High‐quality gas standards reduce uncertainty, improve data comparability, streamline operations and lower overall costs by extending cylinder shelf life and minimizing changeovers.

Cíle a přehled článku

This article presents the Experis® range of calibration and process control gas mixtures by Air Products. It highlights four core performance attributes — accuracy, stability, traceability and operational reliability — and describes how advanced filling, analytical verification and cylinder treatments underpin world‐class gas standards for laboratory and industrial applications.

Použitá metodika a instrumentace

– Accredited preparation under ISO 17025 scope in multiple global special gases facilities
– Use of ultra high-purity raw materials and reference materials from national metrology institutes
– State-of-the-art gravimetric filling and pressure regulation technologies allowing mixtures up to 200 bar
– Custom cylinder surface treatments and valve selection to minimize reactive loss and adsorption
– High-accuracy analytical instruments for composition verification, with component‐specific uncertainty calculations
– Certificates of analysis compliant with ISO 6141 including expanded uncertainties, stability periods and traceability chains

Hlavní výsledky a diskuse

– Achieved standard uncertainties down to ±0.05 percent for key components, demonstrating leadership in precision
– Demonstrated mixture stability exceeding ten years for many blends; reactive compounds at parts‐per‐billion levels remain within specification for up to three years
– Full traceability to primary reference gas mixtures and national mass standards, supporting global data comparability
– ISO 17025 accreditation for multi-component NO, SO2, CO and CO2 gas standards, first in the commercial sector
– Positive proficiency testing outcomes against national metrology institutes confirm analytical performance

Přínosy a praktické využití metody

Key benefits of Experis® mixtures include:

• Reduced measurement uncertainty and enhanced confidence in analytical results
• Extended cylinder shelf life, lowering inventory costs and logistical complexity
• Regulatory compliance support for emissions monitoring quality assurance and control chart implementation
• Wide application scope: laboratory calibration, environmental measurement, engine testing, natural gas analysis, forensic science and food safety
• Availability of refillable and non-refillable cylinder formats enabling flexible deployment

Budoucí trendy a možnosti využití

Ongoing and emerging opportunities include integration of digital monitoring for cylinder usage and gas quality, development of tailored blends for hydrogen economy and renewable energy applications, on-site generation coupled with IoT connectivity, and expansion of ultra-low concentration standards for advanced sensor calibration in fields such as air quality and process analytics.

Závěr

Air Products’ Experis® gas mixture program combines rigorous metrological practices, advanced filling technologies and tailored cylinder treatments to deliver calibration and process gases with best-in-class accuracy, stability and traceability. This capability supports stringent quality assurance requirements, reduces operational costs and fosters technical excellence across diverse analytical and industrial applications.

Reference

• ISO 17025 General requirements for the competence of testing and calibration laboratories
• ISO 6141 Gas analysis — Preparation of calibration gas mixtures — Comparison method for certification
• EA Multilateral Agreement for mutual recognition of calibration certificates
• ILAC Multilateral Recognition Arrangement for calibration and testing reports