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Explore the broadest selection of analytical reference materials and proficiency testing (PT) from the leading brands in certified and analytical reference materials: Spex, NSI, HPS, and Chiron.

Our harmonized product development and custom capabilities are tailored to bring you innovative products to help meet your unique application needs.

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SKU: SQCO-006B

Acid Herbicides in Soil - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: SQCO-006

Acid Herbicides in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: SQCO-005B

PCB in Soil - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: SQCO-005

PCB in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: SQCO-004B

Toxaphene in Soil - Blind

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: SQCO-004

Toxaphene in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: TX-1005SQCB

Texas TPH in Soil - Blind

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  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Raw Material >95% min; as available
SKU: TX-1005SQC

Texas TPH in Soil

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: SQCI-016B

Low Level PAHs in Soil – Blind

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
SKU: SQCI-016

Low Level PAHs in Soil

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  • Brand NSI
  • Certification Single: Gravimetric and/or Volumetric
SKU: PH1941

Aspartame

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Mass Balance; w/Analytical confirmation
SKU: PH1859

Ascorbic Acid

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Mass Balance; w/Analytical confirmation
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