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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: 55760-A

Prometon

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 552-M

2,4,5-TP (Silvex)

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
  • Top rated
SKU: 5521-A

Analyte Mix A, 200 µg/mL

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  • Brand Spex
  • Matrix Methyl Tertiary-Butyl Ether
  • Concentration 200 µg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. &/or Volume w/Analytical Confirm
SKU: 54-A

Nitrobenzene

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54860-HA

Naled

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54860-A

Naled

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54640-HA

Mevinphos (Phosdrin)

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54634L

Metribuzin

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54634H

Metribuzin

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54620-M

Metolachlor

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54620H

Metolachlor

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
SKU: 54400-M

MCPP

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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