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Analytical Reference Material

Organic, Inorganic, Microbiology & PT Reference Materials

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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9,419 Items found

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SKU: 53820-M

Azinphos methyl

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53820-HA

Azinphos methyl

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53820-A

Azinphos methyl

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 536L

Vinyl chloride

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 536H

Vinyl chloride

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53520-HA

Fenthion

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53520-H

Fenthion

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53500-HA

Fensulfothion

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53480-M

Fenitrothion

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 53480-HA

Fenitrothion

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  • Brand NSI
  • Raw Material >95% min
  • Certification Gravimetric and/or Volumetric
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SKU: 531-I-PK

Internal Std/Surrogate for US EPA Method 531, 100 µg/mL (4 x 1 mL)

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  • Brand Spex
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  • Top rated
SKU: 5311-A10

Method 531 Analyte Mix A, 100 µg/mL

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  • Brand Spex
  • Matrix HPLC Acetonitrile
  • Concentration 100 µg/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. &/or Volume w/Analytical Confirm
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