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ISO 17034 certified reference materials for physical testing such as pH, turbidity, color, and visual examinations (e.g., filth). Certified for a broad array of physical testing applications including UV/VIS, pH, turbidimetry, nephelometry, conductivity, and microscopic examination.

Density

Density is a fundamental property in chemistry and physics that defines the mass per unit volume of a substance, typically measured as 1 cubic centimeter for solids or 1 mL for liquids.

Conductivity

Spex® CertiPrep offers conductivity standards for calibration and quality control of testing and monitoring equipment.

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SKU: FM-746

Water Activity in Hemp

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  • Brand NSI
  • Matrix Hemp
  • Raw Material >95% min
  • Certification Single: Grav. w/Analytical Confirmation
SKU: FM-636

Water Activity in Hemp Oil

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  • Brand NSI
  • Matrix Hemp Oil
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: TDS-2-500

CONDUCTIVITY (TDS AS KCL) 650 PPM (500 mL)

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  • Brand Spex
  • Matrix H2O
  • Concentration 650 PPM
SKU: TDS-1-500

CONDUCTIVITY (TDS AS KCL) 65 PPM (500 mL)

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  • Brand Spex
  • Matrix H2O
  • Concentration 65 PPM
SKU: PH-BUFF12-500

PH BUFFER STANDARD 12

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 12 SI Units
  • Matrix H2O
SKU: PH-BUFF11-500

PH BUFFER STANDARD 11

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 11 SI Units
  • Matrix H2O
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
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
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
SKU: PH-BUFF5-500

pH 5 Certified Buffer Standard, 5 SI Units in H2O (500 mL)

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  • Brand Spex
  • Concentration 5 SI Units
  • Matrix H2O
  • Raw Material Five 9s & Purification
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
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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