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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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SKU: PH-BUFF6-500

pH 6 Certified Buffer Standard, 6 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 6 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: PH-BUFF7-500

pH 7 Certified Buffer Standard, 7 SI Units in H2O (500 mL) Yellow in color

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  • Brand Spex
  • Concentration 7 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: PH-BUFF8-500

pH 8 Certified Buffer Standard, 8 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 8 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: PH-BUFF9-500

pH 9 Certified Buffer Standard, 9 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 9 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: PH-BUFF10-500

pH 10 Certified Buffer Standard, 10 SI Units in H2O (500 mL) Blue in color

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  • Concentration 10 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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SKU: 183134

0.0473 N Iodine, 1 Gallon in Amber Glass Bottle

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 0.0473 N
  • Matrix H2O
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SKU: 182002

0.0394 N Sodium Thiosulfate, 1 Gallon in Cubitainer

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 0.0394 N
  • Matrix H2O/0.5% Amyl Alcohol
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SKU: 84410-92

Buffer, pH 10.00, Blue, 4 L, 17025

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  • Brand Spex
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SKU: 84410-93

Buffer, pH 10.00, Blue, 500 mL, 17025

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  • Brand Spex
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SKU: 84410-94

Buffer, pH 4.00, Red, 20 L, 17025

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  • Brand Spex
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SKU: 84410-95

Buffer, pH 4.00, Red, 4 L, 17025

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  • Brand Spex
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SKU: 84410-96

Buffer, pH 4.00, Red, 500 mL, 17025

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  • Brand Spex
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