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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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S. aureus NCTC 10788 S. aureus NCTC 10788
SKU: 51-0032

S. aureus NCTC 10788

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
E. coli NCTC 12923 E. coli NCTC 12923
SKU: 51-0012

E. coli NCTC 12923

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
C. albicans NCPF 3179 C. albicans NCPF 3179
SKU: 51-00054

C. albicans NCPF 3179

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
A. brasiliensis NCPF 2275 A. brasiliensis NCPF 2275
SKU: 51-00053

A. brasiliensis NCPF 2275

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Pseudomonas paraeruginosa NCTC 12924 for USP 51 (1x10^8 CFU) Pseudomonas paraeruginosa NCTC 12924 for USP 51 (1x10^8 CFU)
SKU: 51-00026

Pseudomonas paraeruginosa NCTC 12924 for USP 51 (1x10^8 CFU)

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
USP 51 Sample Kit USP 51 Sample Kit
SKU: 51-0001k

USP 51 Sample Kit

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min; as available
Bacillus cereus Bacillus cereus
SKU: 2599

Bacillus cereus

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  • Brand NSI
  • Certification Gravimetric and/or Volumetric
  • Raw Material >95% min; as available
Aspergillus niger Aspergillus niger
SKU: 16888

Aspergillus niger

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Aspergillus flavus Aspergillus flavus
SKU: 16883

Aspergillus flavus

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Escherichia coli 0157:H7 Escherichia coli 0157:H7
SKU: 12900

Escherichia coli 0157:H7

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Listeria ivanovii Listeria ivanovii
SKU: 11846

Listeria ivanovii

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  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
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