Certified Lab Standards (CLS) provides high-quality certified reference materials (CRMs) designed to meet the rigorous demands of modern analytical laboratories. By combining elite laboratory manufacturing expertise with world-class distribution, CLS delivers the precision necessary for the most sensitive testing environments.
CLS proudly holds ISO 17025 and ISO 17034 accreditations through A2LA. These prestigious certifications verify that our manufacturing processes meet the highest international standards for technical competence, metrological traceability, and the production of certified reference materials.
Our facility specializes in the formulation of complex, custom-made standards tailored to specific laboratory protocols. To ensure seamless procurement and global availability, the primary channel for all CLS product inquiries and orders is through our partner, CPI International. This collaboration allows laboratories to access custom-manufactured standards with the logistical support of an industry leader in chemical distribution.
Founded in 1982, CPI International supplies certified reference materials (CRMs), high-purity reagents, lab consumables, and benchtop equipment to analytical laboratories worldwide.
From cannabis and environmental testing to pharmaceutical and food safety, our products support accuracy and compliance across chromatography, spectroscopy, mass spectrometry, and microbiology methods.

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