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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, Chromium (Cr), 10PPB, 100mL, HNO3
Item number 4400-10PPB121-100
67.00 67.0 USD
Dilution, Chromium(Cr), 15PPM, 500mL
Item number 4400-15PPM121-500
145.00 145.0 USD
Dilution, Lead (Pb), 1PPM, 500mL, H20
Item number 4400-1PPM281-500
145.00 145.0 USD
ICP/MS Standard I
Item number 4400-ICPMS1
444.00 444.0 USD
Dilution, Selenium (Se), 25PPB, 1L, HNO3
Item number 4400-25PPB491-1000
225.00 225.0 USD
98.00 98.0 USD
Dilution, Cobalt (Co), 300PPM, 250mL, HNO3
Item number 4400-300PPM131-250
101.00 101.0 USD
Dilution, Mercury (Hg), 1PPM, 100mL, HNO3
Item number 4400-1PPM331-100
67.00 67.0 USD
Dilution, Bismuth (Bi), 200PPB, 100mL
Item number 4400-200PPB61-100
67.00 67.0 USD
Dilution, Arsenic (As), 200PPM, 100mL, HNO3
Item number 4400-200PPM31-100
67.00 67.0 USD
Dilution, Bismuth (Bi), 20ppm, 2% HNO3, 100mL
Item number 4400-20PPM61-100
67.00 67.0 USD
Dilution, Silver (Ag), 4PPM, 250mL, HNO3
Item number 4400-4PPM511-250
101.00 101.0 USD
Dilution, Platinum (Pt), 100ppm, HCl, 100mL
Item number 4400-100PPM402-100
97.00 97.0 USD
Dilution, Gold (Au), 5PPM, 250mL, HCL
Item number 4400-5PPM212-250
141.00 141.0 USD
Dilution, Chloride (Cl), 100PPM, 100mL
Item number 4400-100PPMCL-100
71.00 71.0 USD
Dilution, Barium (Ba), 10PPM, 100mL, HNO3
Item number 4400-10PPM41-100
119.00 119.0 USD
Dilution, Arsenic (As) 10µg/mL, 250mL
Item number 4400-10PPM31-250
101.00 101.0 USD
Dilution, Mercury (Hg), 20ppm, 2% HNO3, 100mL
Item number 4400-20PPM331-100
67.00 67.0 USD
Dilution, Colbalt (Co), 250PPM, 100mL, HNO3
Item number 4400-250PPM131-100
67.00 67.0 USD