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We offer ISO-accredited microbiological certified reference materials. Validated and traceable cultures are no more than two passages from the primary reference culture, ensuring genetic traceability to the primary cell line. Each lyophilized culture is preserved in our proprietary Microgel-Flash™ quick dissolve matrix. Pellets dissolve instantly once hydrated. Manufactured and tested under ISO 17034 and 17025 accreditations.

Downloadable Certificates of Analysis are available from our website. Sold in packs of 10 individually vacuum-sealed microorganism pellets. Stores in the freezer at -20°C to -10°C, with a product shelf life of 18 months from the manufacture date.

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Environmental

Robust — lyophilized technique ensures strong recovery even for 44.5 ºC coliform methods.

Pharmaceutical

Stable — hydrated samples can be used for up to 8 hours.

Food & Agriculture

Our organic standards, designed around analytical needs and international methodologies, range from pesticide testing to target fragrance and flavor compounds.

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MA EPH Aliphatics MA EPH Aliphatics
SKU: UST-420

MA EPH Aliphatics

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
CA WIP VOA Standard CA WIP VOA Standard
SKU: UST-410

CA WIP VOA Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
PVOC Mixture (CA) PVOC Mixture (CA)
SKU: UST-400

PVOC Mixture (CA)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
DRO Mix (TN/MS) DRO Mix (TN/MS)
SKU: UST-380

DRO Mix (TN/MS)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
WI DRO Mixture WI DRO Mixture
SKU: UST-370

WI DRO Mixture

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
WI PVOC/GRO Standard WI PVOC/GRO Standard
SKU: UST-360

WI PVOC/GRO Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
MA VPH Standard MA VPH Standard
SKU: UST-310

MA VPH Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Primary VPH Stock Std (WA) Primary VPH Stock Std (WA)
SKU: UST-300

Primary VPH Stock Std (WA)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
WA VPH Stock Standard WA VPH Stock Standard
SKU: UST-300L

WA VPH Stock Standard

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
EPH Surrogate Mix EPH Surrogate Mix
SKU: UST-290

EPH Surrogate Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
EPH Surrogate Mix EPH Surrogate Mix
SKU: UST-290H

EPH Surrogate Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
EPH Fractionation Check Std EPH Fractionation Check Std
SKU: UST-280

EPH Fractionation Check Std

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
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