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High-Quality Analytical Reference Materials Spex | NSI | HPS | Chiron

Precision & Accuracy for Every Analysis

Ensure the highest confidence in your laboratory results with high-quality reference materials from industry-leading brands: Spex, NSI, HPS, and Chiron. Our extensive selection supports environmental, food safety, pharmaceutical, toxicology, cannabis, and industrial testing.

Our Reference Materials Include:

  • Inorganic Standards – Trace metals, ICP, ICP-MS, AAS, and wet chemistry solutions
  • Organic Standards – Pesticides, PCBs, PAHs, VOCs, SVOCs, and more
  • Microbiology Standards – Quantitative and qualitative reference materials for pathogen detection, sterility testing, and microbial analysis
  • Proficiency Testing (PT) Samples – Validate accuracy with external quality controls
  • Custom Standards – Tailored solutions to meet your lab’s specific needs – Fill out your custom request today!

Why Choose Us?

  • ISO 17034 & ISO 17025 Accreditation – Certified for reliability and traceability
  • Compliance with EPA, AOAC, ASTM, ISO, and other global regulations
  • High-Purity Materials – Ensuring precision in every analysis
  • Expert Support – Technical assistance to optimize your testing process

Get Started Today

Explore our full range of analytical and microbiology reference materials.

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9,268 Items found

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SKU: PEI-016

Trace Metals Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/ICP Confirmation
SKU: PEI-015

Cyanide Drinking Water Inorganic Standard

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  • Brand NSI
  • Concentration 0.1 - 0.5 mg/L
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEI-014

Turbidity Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEI-013

TOC/DOC Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: PEI-012

Residual Free Chlorine Drinking Water Inorganic Standard

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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Grav. w/Analytical Confirmation
SKU: WQC-PH-10-500

pH Standard 10 at 25ºC at 10.00 units in H2O (500 mL)

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  • Brand HPS
  • Matrix H2O
  • Raw Material Two 9s as available; no purification
  • Certification Single: Grav. w/multiple Analytical Confirmation
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
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