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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, Magnesium (Mg), 10PPM, 100mL
Item number 4400-10PPM311-100
67.00 67.0 USD
Dilution, Lithium 6 (Li6), 100PPM, 100mL
Item number 4400-100PPM296I-100
220.00 220.0 USD
Dilution, Mercury (Hg), 50PPM, 250mL, HNO3
Item number 4400-50PPM331-250
101.00 101.0 USD
Dilution, Zinc (Zn) 10 ppm, 100mL
Item number 4400-10PPM681-100
67.00 67.0 USD
Dilution, Chromium (Cr) 100ppm, 2% HNO3, 100mL
Item number 4400-100PPM121-100
67.00 67.0 USD
Dilution, Cobalt (Co), 1PPM, 500mL, HNO3
Item number 4400-1PPM131-500
142.00 142.0 USD
Dilution, Cadmium (Cd), 10PPM, 100mL, HNO3
Item number 4400-10PPM81-100
67.00 67.0 USD
Dilution, Mercury (Hg), 100PPM, 100mL
Item number 4400-100PPM331-100
67.00 67.0 USD
Dilution, Copper (Cu), 100ppm, HNO3, 100mL
Item number 4400-100PPM141-100
67.00 67.0 USD
Dilution, Chromium (Cr), 60PPT, 100mL, HNO3
Item number 4400-60PPT121-100
67.00 67.0 USD
Dilution, Chromium, 500PPT, 100mL, HNO3
Item number 4400-500PPT121-100
67.00 67.0 USD
Dilution, Lead (Pb), 200PPM, 100mL, HNO3
Item number 4400-200PPM281-100
67.00 67.0 USD
Dilution, Cobalt (Co), 400PPM, 250mL, HNO3
Item number 4400-400PPM131-250
101.00 101.0 USD
Dilution, Mercury (Hg), 200PPM, 100mL, HNO3
Item number 4400-200PPM331-100
67.00 67.0 USD
Dilution, Copper(Cu), 5PPM, 500mL
Item number 4400-5PPM141-500
145.00 145.0 USD
ICP/MS Standard IV
Item number 4400-010027
403.00 403.0 USD
Dilution, Cadmium (Cd), 200PPM, 100mL, HNO3
Item number 4400-200PPM81-100
67.00 67.0 USD
ICP/MS Standard #3
Item number 4400-ICPMS3
656.00 656.0 USD