PLEASE NOTE: We will be closed Thursday, January 1, 2026.
Inorganic Standards
Standardize Your Standards
CPI International’s Peak Performance™ Inorganic Certified Reference Materials are manufactured for accuracy, consistency, and traceability — delivering reliable results for ICP, ICP-MS, and Atomic Absorption applications.
Set up Auto-ship and relax in the knowledge that you'll never run out of your critical standards again!
Started with Precision
- High-purity starting materials
- Sub-boiling distilled acids
- 18 MΩ de-ionized water
Packaged for Reliability
- Pre-cleaned, pre-leached HDPE
or LDPE bottles
- Heat-shrink seals
Engineered for Accuracy
- Class A volumetric glassware
- Accurate to ±0.3%
(single-element standards)
- Certified against NIST SRM 3100 series
Backed by Integrity
- NIST-traceable balances
- Minimum 12-mo. shelf life
- CoA with every standard
Built on Quality
- Made in U.S.A.
- Produced in ISO 17034–accredited facility
- Tested in ISO/IEC 17025–accredited lab
We'll Mix Customs for YOU!
- Tailored by your matrix & method
- Lower your cost per test
- Warehouse stocking options available