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Analytical Reference Materials

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: 24121-89

MicroPrefs® Tablet: Mix of PP, PVC, PC (50-300 µm); 50-300 µm, 70-100 particles/tab: 1 x tablet; S-5402-50/300-TAB

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  • Brand Chiron
  • Concentration 50-300 µm, 70-100 particles/tab
  • Matrix NaHCO3/Citric acid/Lactose
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SKU: 24121-94

MicroPrefs® Polystyrene (50-300 µm); neat

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  • Brand Chiron
  • Concentration neat
  • Matrix Neat
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SKU: CRM-5481-1-ME

PFAS EPA Method 533 Mix, 1 µg/mL in methanol with 4 mol eq. NaOH, 1 mL

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  • Brand Chiron
  • Certification Grav. &/or Volume w/Analytical Confirmation
  • Concentration 1 µg/mL
  • Matrix Methanol with 4 mol eq. NaOH
  • Raw Material min. 95% purity
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SKU: CRM-5482-2-ME

PFAS EPA Method 537 Mix, 2 µg/mL in methanol with 4 mol eq. NaOH, 1 mL

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  • Brand Chiron
  • Certification Grav. &/or Volume w/Analytical Confirmation
  • Concentration 2 µg/mL
  • Matrix Methanol with 4 mol eq. NaOH
  • Raw Material min. 95% purity
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SKU: CRM-5484-ASS-ME

PFAS EPA Method 1633 Mix, in methanol with 4 mol eq. NaOH, 1 mL

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  • Brand Chiron
  • Certification Grav. &/or Volume w/Analytical Confirmation
  • Concentration Assorted
  • Matrix Methanol with 4 mol eq. NaOH
  • Raw Material min. 95% purity
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SKU: CRM-5483-20-ME

PFAS EPA NPDWR2024 Mix, 20 µg/mL in methanol with 4 mol eq. NaOH, 1 mL

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  • Brand Chiron
  • Certification Grav. &/or Volume w/Analytical Confirmation
  • Concentration 20 µg/mL
  • Matrix Methanol with 4 mol eq. NaOH
  • Raw Material min. 95% purity
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SKU: WQC-PH-7-500

pH Standard 7 at 25ºC at 7.00 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
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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
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SKU: WQC-ALK-500

Calcium Carbonate Alkalinity Standard at 1,000 µg/mL in H2O (500 mL)

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  • Brand HPS
  • Matrix H2O
  • Concentration 1,000 µg/mL
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
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SKU: SB-HCL

Subboiling Distilled Hydrochloric Acid, Trace Metals Grade

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  • Brand HPS
  • Certification Single: Gravimetric
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SKU: RB-MMA-1

Mixed Mineral Acid 2% HNO3 + 0.5% HF Reagent Blank

  • CCL
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  • Brand HPS
  • Certification Single: Gravimetric
  • Matrix 2% HNO3 + 0.5% HF
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SKU: PEI-193

Fluoride Drinking Water Inorganic Standard

  • CCL
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  • Brand NSI
  • Raw Material >95% min; as available
  • Certification Single: Gravimetric w/IC Confirmation
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