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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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9,421 Items found

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SKU: FC-925

Proximates and Elements in Sweet Rice Flour

  • RUO
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  • Brand NSI
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SKU: FM-601

Aspergillus niger in Hemp Positive Control (10 x 1g pack)

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  • Brand NSI
  • Certification Cultural based enumeration
  • Matrix Hemp
  • Raw Material <2 passages from primary culture
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SKU: SB-HNO3

Subboiling Distilled Nitric Acid, Trace Metals Grade

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  • Brand HPS
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SKU: QC-TMFM-A

37mm Mixed Cellulose Ester Filter, Low-Level

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  • Brand HPS
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SKU: QC-TMFM-B

37mm Mixed Cellulose Ester Filter, Mid-Level

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  • Brand HPS
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SKU: QC-TMFM-BLANKS

37mm Mixed Cellulose Ester Filter Blanks

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  • Brand HPS
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SKU: QC-TMFM-C

37mm Mixed Cellulose Ester Filter, High-Level

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  • Brand HPS
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SKU: QC-TMFM-D

37mm Mixed Cellulose Ester Filter, Low-Level w/Al

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  • Brand HPS
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SKU: QC-TMFM-E

37mm Mixed Cellulose Ester Filter, Mid-Level w/Al

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  • Brand HPS
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SKU: PH-BUFF2-500

pH 2 Certified Buffer Standard, 2 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 2 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: PH-BUFF3-500

pH 3 Certified Buffer Standard, 3 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 3 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: PH-BUFF4-500

pH 4 Certified Buffer Standard, 4 SI Units in H2O (500 mL) Red in color

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  • Brand Spex
  • Concentration 4 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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