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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, Germanium (Ge), 100PPM, 100mL, HNO3
Item number 4400-100PPM201-100
67.00 67.0 USD
Diultion, Copper (Cu), 50ppm, 100 mL
Item number 4400-50PPM141-100
67.00 67.0 USD
Dilution, Barium (Ba), 100PPM, 100mL, HNO3
Item number 4400-100PPM41-100
67.00 67.0 USD
Dilution, Bismuth (Bi), 100PPM, 250mL, 2% HNO3
Item number 4400-100PPM61-250
104.00 104.0 USD
Dilution, Bismuth (Bi), 100ppm, 2% HNO3, 100mL
Item number 4400-100PPM61-100
67.00 67.0 USD
Dilution, Boron (B), 100PPM, 100mL
Item number 4400-100PPM74-100
67.00 67.0 USD
Dilution, Nitrogen from Nitrate(N-NO3),100ppm,100mL
Item number 4400-100PPMN-NO3-100
67.00 67.0 USD
Dilution, Phosphorus (P), 100ppm, HNO3, 100mL
Item number 4400-100PPM391-100
67.00 67.0 USD
Dilution, Chlorate (ClO4), 10ppm, H2O, 100mL
Item number 4400-10PPM-CLO4-100
67.00 67.0 USD
Dilution, Cesium (Cs), 10PPM, 100mL, HNO3
Item number 4400-10PPM111-100
67.00 67.0 USD
Dilution, Chromium (Cr), 10ppm, 100mL, HNO3
Item number 4400-10PPM121-100
98.00 98.0 USD
Dilution, Chromium (Cr+6), 10PPM, 100mL
Item number 4400-10PPM127-100
76.00 76.0 USD
Dilution, Antimony (Sb) 10µg/mL, 100mL
Item number 4400-10PPM23-100
67.00 67.0 USD
Dilution, Arsenic (As) 10ppm, 100mL,HNO3
Item number 4400-10PPM31-100
67.00 67.0 USD
Dilution, Beryllium (Be), 10PPM, 100mL
Item number 4400-10PPM51-100
119.00 119.0 USD
Dilution, Magnesium (Mg), 10PPM, 250mL, HNO3
Item number 4400-10PPM311-250
101.00 101.0 USD
Dilution, Manganese (Mn) 10µg/mL, 100mL
Item number 4400-10PPM321-100
67.00 67.0 USD
Dilution, Tellurium (Te), 10ppm, 100mL
Item number 4400-10PPM563-100
67.00 67.0 USD
Dilution, Boron (B), 10PPM, 100mL
Item number 4400-10PPM74-100
67.00 67.0 USD
Dilution, Phosphorus (P-PO4)
Item number 4400-12.5PPM391-1000
0.0 USD