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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: CLN-SOIL

Clean Soil Certified Reference Material

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  • Brand Spex
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Raw Material >95% min; as available
SKU: C-931

Moisture in Hemp CRM

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  • Brand NSI
  • Matrix Hemp
  • Raw Material >95% min; as available
  • Certification Grav &/ Volumetric w/analytical confirmation
SKU: FM-747

Water Activity in Edible

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  • Brand NSI
  • Matrix Edible
  • Raw Material >95% min
  • Certification Single: Grav. w/Analytical Confirmation
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: CMQC-081

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: CMQC-078

Water Activity in Edible

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  • Brand NSI
  • Matrix Edible
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: CMQC-022

Moisture in Hemp

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  • Brand NSI
  • Matrix Hemp
  • Concentration 50,000 copies/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: CMQC-021

Water Activity in Hemp

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  • Brand NSI
  • Matrix Hemp
  • Concentration 50,000 cells/mL
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
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
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
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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