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Inorganic Reference Materials

High-quality Inorganic Reference Materials 

We offer a full range of inorganic standards for IC, AA, ICP, and ICP-MS. The highly characterized standards in our Assurance and Claritas PPT lines are intended for ICP and ICP-MS trace analysis. We have built our reputation by providing chemists and environmental scientists products that exhibit quality, reliability, and convenience.

Inorganic Standards Can Be Used For:

  • Atomic Absorption (AA)
  • Inductively Coupled Plasma (ICP)
  • Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)
  • Ion Chromatography (IC)

Features of Spex Inorganic Standards:

  • Wide range of single & multi-element standards for Claritas PPT® and Assurance® grades
  • Multi-element standards designed for the latest EPA methods
  • Custom standards tailored to your application needs
  • Traceable to NIST SRM for confidence in results
  • High-purity acids: Assurance® (high purity) & Claritas PPT® (ultra high purity) formulations
  • Broad analytical range with detection levels at ppb (Assurance®) & ppb/ppt (Claritas PPT®), backed by a Certificate of Analysis
  • Dedicated team of scientists for expert guidance & support

Download Our Inorganic Standards Brochure

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Search Our Full Range of Inorganic Standards for IC, AA, ICP, and ICP-MS

IC Standards

ICP Standards

ICP-MS Standards

Cannabis & Hemp

USP <232> and USP <233> Elemental Impurity and ICH Standards

Organometallic Oil Standards

Carbon Black

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1,815 Items found

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Silver, 1,000 µg/mL, for AA and ICP (125 mL) Silver, 1,000 µg/mL, for AA and ICP (125 mL)
SKU: PLAG2-2Y

Silver, 1,000 µg/mL, for AA and ICP (125 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
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  • Top rated
Silver, 1,000 µg/mL, for AA and ICP (500 mL) Silver, 1,000 µg/mL, for AA and ICP (500 mL)
SKU: PLAG2-2X

Silver, 1,000 µg/mL, for AA and ICP (500 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
Quick View
  • Top rated
Silver, 1,000 µg/mL, for AA and ICP (250 mL) Silver, 1,000 µg/mL, for AA and ICP (250 mL)
SKU: PLAG2-2T

Silver, 1,000 µg/mL, for AA and ICP (250 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
Quick View
  • Top rated
Silver, 1,000 µg/mL, for AA and ICP (30 mL) Silver, 1,000 µg/mL, for AA and ICP (30 mL)
SKU: PLAG2-2M

Silver, 1,000 µg/mL, for AA and ICP (30 mL)

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  • Brand Spex
  • Matrix 2% HNO3
  • Concentration 1,000 µg/mL
  • Measured Impurities 68 elements to ppm (product)
  • Raw Material Five 9s & Purification as available
  • Certification Dual: Wet Chem, ICP Direct & ICPMS Impurities
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pH 9 Certified Buffer Standard, 9 SI Units in H2O (500 mL) pH 9 Certified Buffer Standard, 9 SI Units in H2O (500 mL)
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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pH 8 Certified Buffer Standard, 8 SI Units in H2O (500 mL) pH 8 Certified Buffer Standard, 8 SI Units in H2O (500 mL)
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
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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
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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
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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
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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
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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
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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
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