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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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Naphthalene - d8 Naphthalene - d8
SKU: UST-790

Naphthalene - d8

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
MA VPH Std w/Surrogate-Rev1.1 MA VPH Std w/Surrogate-Rev1.1
SKU: UST-740

MA VPH Std w/Surrogate-Rev1.1

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
MA VPH Std w/Surrogate-Rev1.1 MA VPH Std w/Surrogate-Rev1.1
SKU: UST-740L

MA VPH Std w/Surrogate-Rev1.1

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Connecticut ETPH Std Connecticut ETPH Std
SKU: UST-735

Connecticut ETPH Std

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Methanol (CA) Methanol (CA)
SKU: UST-730

Methanol (CA)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Ethanol (CA) Ethanol (CA)
SKU: UST-725

Ethanol (CA)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Glycols Mix Glycols Mix
SKU: UST-720

Glycols Mix

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Oxygenates Mix (CA) Oxygenates Mix (CA)
SKU: UST-715

Oxygenates Mix (CA)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
DRO/GRO Cal Std (AZ) DRO/GRO Cal Std (AZ)
SKU: UST-705

DRO/GRO Cal Std (AZ)

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Hydraulic Oil Hydraulic Oil
SKU: UST-510

Hydraulic Oil

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Mineral Spirits Mineral Spirits
SKU: UST-507

Mineral Spirits

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
Motor Oil 10W30, 5000ppm in Methylene Chlordide Motor Oil 10W30, 5000ppm in Methylene Chlordide
SKU: UST-506

Motor Oil 10W30, 5000ppm in Methylene Chlordide

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  • Brand NSI
  • Matrix Methylene Chlordide
  • Concentration 5000ppm
  • Certification Gravimetric and/or Volumetric
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