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Custom Inorganic Standards

Reduce workload and improve efficiency with CPI Custom Inorganic Reference Standards. 

Our custom inorganic reference materials are produced in an ISO 17025:2015 and ISO 17034 accredited facility to support a wide range of elemental analysis, quality control, method validation, and analytical testing workflows across regulated and research laboratories.

All of our custom standards are prepared from high-grade starting materials, sub-boiling distilled acids, and 18-megohm deionized water. Each standard is gravimetrically prepared and instrumentally verified against NIST SRM® 3100 series spectrometric solutions to support traceability and analytical confidence.

All custom inorganic reference materials are bottled in either pre-cleaned, pre-leached HDPE or LDPE bottles and secured with heat-shrink seals to maintain integrity during storage and use.

CPI's custom inorganic standards are available in 100 mL, 250 mL, 500 mL, and 1 L volumes, with concentrations and formulations tailored to your method and matrix requirements. Each standard incudes an ISO 17034 compliant Certificate of Analysis, and most customs carry a typical shelf life of 18 months from the date of shipment.

To inquire about the custom standards you need, please fill out our Custom Inorganic Standards Request Form by listing elements or attach a document with your more detailed specifications. 



By submitting our Custom Inorganic Standard Request ​form you agree that the entered data will be used for the purpose of processing your request. This information will also be stored by CPI International until you revoke your consent, which you can do at any time. For further information please read our Privacy Policy.

Custom Inorganic Standard Request ​

Concentration in µg/mL (PPM)
If you would like to provide more detailed specifications for your Custom Inorganic Standard request, please attach them here.