Skip to Main Content

Select country

Select your country

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.

Search by Category

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.

Share Your Experience — Achieve Confidence in Microbiology Testing

Have you used our Microbiology Certified Reference Materials in your lab? Your feedback matters! By leaving a review on SelectScience®, you’re not only helping us improve—you’re also helping scientists worldwide make informed decisions.

Leave a review by July 31, 2026 and you’ll be entered for a chance to win a $400 Amazon® gift card, courtesy of SelectScience®.

LEAVE A REVIEW

* Giveaways and eligibility administered by SelectScience®. Terms and conditions may apply.

Categories and filters

Filter / Sorting

Categories

Brand

Classification

Accreditations

Product Type

Regulatory Method

Instrument / Test

Analyte - Single / Multi

CAS #

Strain

Analyte / Component

Microorganism

5,540 Items found

Per Page:
Sort by:
Unit Dose™ Bacillus subtilis Unit Dose™ Bacillus subtilis
SKU: UD-6633

Unit Dose™ Bacillus subtilis

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Staphylococcus aureus Unit Dose™ Staphylococcus aureus
SKU: UD-6538

Unit Dose™ Staphylococcus aureus

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Salmonella abony Unit Dose™ Salmonella abony
SKU: UD-6017

Unit Dose™ Salmonella abony

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Bacillus cereus Unit Dose™ Bacillus cereus
SKU: UD-2599

Unit Dose™ Bacillus cereus

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Escherichia coli Unit Dose™ Escherichia coli
SKU: UD-25922

Unit Dose™ Escherichia coli

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Aspergillus brasiliensis Unit Dose™ Aspergillus brasiliensis
SKU: UD-2275

Unit Dose™ Aspergillus brasiliensis

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Enterococcus faecalis Unit Dose™ Enterococcus faecalis
SKU: UD-12697

Unit Dose™ Enterococcus faecalis

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Salmonella enterica typhimurium (formerly #UD-14028) Unit Dose™ Salmonella enterica typhimurium (formerly #UD-14028)
SKU: UD-12023

Unit Dose™ Salmonella enterica typhimurium (formerly #UD-14028)

  • CCL
Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Listeria innocua Unit Dose™ Listeria innocua
SKU: UD-11288

Unit Dose™ Listeria innocua

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Candida albicans Unit Dose™ Candida albicans
SKU: UD-10231

Unit Dose™ Candida albicans

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Unit Dose™ Enterobacter aerogenes Unit Dose™ Enterobacter aerogenes
SKU: UD-10006

Unit Dose™ Enterobacter aerogenes

Login to view pricing
  • Brand NSI
  • Raw Material <2 passages from primary culture
  • Certification Cultural based enumeration
Texas TPH in Water - Blind Texas TPH in Water - Blind
SKU: TX-1005WQCB

Texas TPH in Water - Blind

Login to view pricing
  • Brand NSI
  • Certification Grav &/ Volumetric w/analytical confirmation
  • Matrix Water
  • Raw Material >95% min; as available
AlertAlertBrowse fileDownload fileFileImagePdfWordTextExcelPowerpointArchiveCsvAudioVideoSpinnerCalendarReturn arrowMinusVisibleInvisibleVisibleInvisibleConfigure