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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


288.00 288.0 USD
Complete Set of Calibration Standards
Item number 4400-MXSTD-SET
516.00 516.0 USD
607.00 607.0 USD
120.00 120.0 USD
1,954.00 1954.0 USD
Dilution, Platinum (Pt), 125PPM, 250mL, HNO3
Item number 4400-125PPM402-250
122.00 122.0 USD
Dilution, Silver (Ag), 25PPM, 250mL, HNO3
Item number 4400-25PPM511-250
97.00 97.0 USD
Dilution, Silver (Ag), 1ppm, HNO3, 100mL
Item number 4400-1PPM511-100
63.00 63.0 USD
Dilution, Tungsten (W), 10PPM, 250mL, HNO3 + HF
Item number 4400-10PPM633-250
97.00 97.0 USD
Dilution, Scandium (Sc), 50PPM, 250mL, HNO3
Item number 4400-50PPM481-250
96.00 96.0 USD
Dilution, Titanium (ti) 100PPm 100ML
Item number 4400-100PPM623-100
69.00 69.0 USD
Dilution, Platinum (Pt), HNO3, 250mL
Item number 4400-100PPM402-250
122.00 122.0 USD
Dilution, Flouride (F), 100ppm, H2O, 500mL
Item number 4400-100PPMF-500
139.00 139.0 USD
Internal Standard
Item number 4400-010039
171.00 171.0 USD
Dilution, Gold (Au), 20PPM, 250mL, HCL
Item number 4400-20PPM212-250
137.00 137.0 USD
Dilution, Manganese (Mn), 2PPM, 500mL, HNO3
Item number 4400-2PPM321-500
139.00 139.0 USD
Dilution, Cadmium (Cd), 500PPB, 500mL, HNO3
Item number 4400-500PPB81-500
139.00 139.0 USD