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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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USP Proficiency Testing Program

Spex/NSI, in partnership with USP, now offers Proficiency Testing products for a variety of testing schemes for both quantitative and qualitative test performance.

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Products

spexcerti

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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Certifications

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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Documentation

Get Your SDS and SPEXertificate

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Check Out Our USP Calculator

Tools, Tips and Tricks

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News & Events

Want to know what Spex is up to?

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