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Custom Reference Standards

Inorganic Standards


Peak Performance™ certified reference 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


Dilution, Lithium (Li) 10ppm, 100mL
Item number 4400-10PPM291-100
67.00 67.0 USD
Dilution, Iron (Fe), 1PPM, 500mL, HNO3
Item number 4400-1PPM261-500
176.00 176.0 USD
Dilution, Perchlorate (CL04), 100PPM, 100mL
Item number 4400-100PPMCL04-100
67.00 67.0 USD
453.00 453.0 USD
ICP/MS for 6020 CLP-M
Item number 4400-ICPMS-6020
306.00 306.0 USD
Dilution, Palladium (Pd), 5PPM, 250mL, HNO3
Item number 4400-5PPM381-250
101.00 101.0 USD
Dilution, Rhodium (Rh), HCl, 100ppm, 100mL
Item number 4400-100PPM442-100
640.00 640.0 USD
255.00 255.0 USD
Dilution, Phosphorus (P-PO4), 25PPM, 1L, H20
Item number 4400-25PPM391-1000
225.00 225.0 USD
Dilution, Phosphorus (P-PO4), 200PPM, 1L, H20
Item number 4400-200PPM391-1000
225.00 225.0 USD
Dilution, Cobalt (Co), 2PPM, 500mL, HNO3
Item number 4400-2PPM131-500
145.00 145.0 USD
ICP/MS Check Standard
Item number 4400-ICP-MS-ICS
683.00 683.0 USD
Dilution, Selenium (Se), 100ppm, 100mL
Item number 4400-100PPM491-100
67.00 67.0 USD
Dilution, Platinum, (Pt), 200PPM, 250mL, HCL
Item number 4400-200PPM402-250
101.00 101.0 USD
Dilution, Lanthanum (La), 100PPM, 100mL, HNO3
Item number 4400-100PPM271-100
97.00 97.0 USD
Dilution, Lithium (Li), 100PPM, 100mL
Item number 4400-100PPM291-100
67.00 67.0 USD
Dilution, Erbium (Er), 100ppm, HNO3, 100mL
Item number 4400-100PPM161-100
67.00 67.0 USD
Dilution, Gadolinium (Gd), 100PPM, 100mL, HNO3
Item number 4400-100PPM181-100
138.00 138.0 USD
Dilution, Vanadium (V), 50PPM 100mL, HNO3
Item number 4400-50PPM651-100
67.00 67.0 USD
Dilution, Lead (Pb), 50PPB, 100mL
Item number 4400-50PPB281-100
67.00 67.0 USD