SPEX, NSI, HPS, & NOW CHIRON  I  Your CRM & Proficiency Testing Solutions, now part of ZeptoMetrix.

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Accelerate Innovation with Custom Reference Materials

Inorganic and organic custom standards made to your exact specifications.

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Explore Standards for PFAS Detection

We are pleased to add Chiron to our reference materials portfolio. PFAS products available soon!

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Proficiency Testing and PT Express™

Spex® now offers Proficiency Testing and PT Express products for a variety of testing schemes for both quantitative and qualitative test performance.

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The Broadest Selection of Cannabis CRMs & PT

NEW! High Abundance Terpene Mix - our latest terpene mix takes into consideration the natural differences in concentration in a terpene profile.

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It’s not only what we do, it’s how we do it.

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Our History

Manufacturing Certified Reference Materials since 1954

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Most comprehensive scope of accreditations and certifications in the industry

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Chat With an Expert

Dedicated technical support to answer your CRM and lab questions

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Get Your SDS and SPEXertificate

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Tools, Tips and Tricks

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News & Events

Want to know what Spex® Certiprep is up to?

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