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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Products

AA | IC | ICP | ICP-MS
LC-ICP-MS | XRF

GC | GC/MS
HPLC | LC/MS

Customized Standards
for Every Application

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

Manufacturing Certified Reference Materials since 1954

Most comprehensive scope of accreditations and certifications in the industry

Dedicated technical support to answer your CRM and lab questions

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