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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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9,912 Items found

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SKU: CWW-TM-C

22 Component Trace Metals in 10% HNO3 + Tr HF, Mix C (10 mL)

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  • Brand HPS
  • Matrix 10% HNO3 + Tr HF, Mix C
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
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SKU: CWW-TM-B

22 Component Trace Metals in 10% HNO3 + Tr HF, Mix B (10 mL)

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  • Brand HPS
  • Matrix 10% HNO3 + Tr HF, Mix B
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
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SKU: CWW-TM-A

22 Component Trace Metals in 10% HNO3 + Tr HF, Mix A (10 mL)

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  • Brand HPS
  • Matrix 10% HNO3 + Tr HF, Mix A
  • Raw Material Five 9s as available; no purification
  • Certification Single: Gravimetric w/ICP Confirmation
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SKU: 8167

Klebsiella oxytoca

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  • Brand NSI
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SKU: 775H

E. faecalis High CFU (1000-1500 CFU)

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  • Brand NSI
  • Matrix E. faecalis
  • Concentration 1000 - 2000cfu
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
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SKU: 531-I-PK

Internal Std/Surrogate for US EPA Method 531, 100 µg/mL (4 x 1 mL)

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  • Brand Spex
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SKU: 10662-10

P. aeruginosa (NCTC 12951) (10 pack)

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  • Brand NSI
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SKU: 10006-20X

K. aerogenes (NCTC 10006) (20 pack)

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  • Brand NSI
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SKU: 10006-10

K. aerogenes (NCTC 10006) (10 pack)

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  • Brand NSI
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SKU: 541

Benzoic acid

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  • Brand NSI
  • Concentration 20-200 mg/kg
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SKU: 14173.10-50-ME

8:2 FTUCA,1 mL,50 µg in Methanol,1 mL

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  • Brand Chiron
  • Concentration 50 μg/mL
  • Matrix methanol
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SKU: 14176.7-50-ME

ADONA sodium salt,1 mL,50 µg conj.base in Methanol,1 mL

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  • Brand Chiron
  • Concentration 50 μg/mL
  • Matrix methanol
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