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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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pH 7 Certified Buffer Standard, 7 SI Units in H2O (500 mL) Yellow in color pH 7 Certified Buffer Standard, 7 SI Units in H2O (500 mL) Yellow in color
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
pH 6 Certified Buffer Standard, 6 SI Units in H2O (500 mL) pH 6 Certified Buffer Standard, 6 SI Units in H2O (500 mL)
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
pH 5 Certified Buffer Standard, 5 SI Units in H2O (500 mL) pH 5 Certified Buffer Standard, 5 SI Units in H2O (500 mL)
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
pH 4 Certified Buffer Standard, 4 SI Units in H2O (500 mL) Red in color pH 4 Certified Buffer Standard, 4 SI Units in H2O (500 mL) Red in color
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
pH 3 Certified Buffer Standard, 3 SI Units in H2O (500 mL) pH 3 Certified Buffer Standard, 3 SI Units in H2O (500 mL)
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
pH 2 Certified Buffer Standard, 2 SI Units in H2O (500 mL) pH 2 Certified Buffer Standard, 2 SI Units in H2O (500 mL)
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
PH BUFFER STANDARD 11 PH BUFFER STANDARD 11
SKU: PH-BUFF11-500

PH BUFFER STANDARD 11

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  • Brand Spex
  • Certification Single: Wet Chemistry
  • Concentration 11 SI Units
  • Matrix H2O
pH 10 Certified Buffer Standard, 10 SI Units in H2O (500 mL) Blue in color pH 10 Certified Buffer Standard, 10 SI Units in H2O (500 mL) Blue in color
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
Water Activity in Edible Water Activity in Edible
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
Water Activity in Hemp Water Activity in Hemp
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
Salmonella in Hemp Positive Control Salmonella in Hemp Positive Control
SKU: FM-732

Salmonella in Hemp Positive Control

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  • Brand NSI
  • Matrix Hemp
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Quantitative Enterobacteriaceae in Hemp Quantitative Enterobacteriaceae in Hemp
SKU: FM-730

Quantitative Enterobacteriaceae in Hemp

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  • Brand NSI
  • Matrix Hemp
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
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