Shigella · Supplement
Chromogenic Shigella Agar Supplement – completes Chromogenic Shigella Agar
The Chromogenic Shigella Agar Supplement completes Chromogenic Shigella Agar for the selective isolation of Shigella. It is dissolved in water, filter-sterilised and added to the cooled base.
- For Chromogenic Shigella Agar
- Added after the base has cooled
- 8 g pack
How Chromogenic Shigella Agar Supplement works
The supplement provides the selective and differential components of the medium, so that Shigella can be recognised by colony colour and the colour of the surrounding medium.
Technical data
| Use | Dissolve in 30 mL water, filter-sterilise, add to 970 mL Chromogenic Shigella Agar base at 50–55 °C |
| Storage | 2–8 °C |
Applications and practical notes
Shigella causes bacillary dysentery and is tested in food, water and clinical samples, for example according to ISO 21567. Typical applications include:
- Ready-to-eat foods, salads and vegetables
- Seafood and dairy products
- Drinking and surface water
- Clinical and public-health laboratories
Working with Chromogenic Shigella Agar Supplement: Dissolve the supplement in 30 mL of water, sterilise it by filtration and add it to 970 mL of base at 50–55 °C.
Good practice with media and supplements: keep the bottle tightly closed in a cool, dry place, weigh the powder quickly to avoid moisture uptake, and use fresh distilled or deionised water. Check the pH of each new batch after preparation and before use, and label prepared media with the date. Performance of each lot can be verified with reference strains according to ISO 11133, the standard for the preparation, production, storage and performance testing of culture media.
About the Shigella and Yersinia methods: ISO 21567 describes the detection of Shigella in food by enrichment in Shigella broth with novobiocin, plating on selective agars such as MacConkey, XLD and Hektoen enteric agar, and biochemical and serological confirmation. ISO 10273 describes the detection of presumptive pathogenic Yersinia enterocolitica by enrichment at 25 °C and plating on CIN agar, followed by tests that separate pathogenic from non-pathogenic strains. COLO.Science offers media, supplements, rapid tests, identification kits and QC strains for these methods.
Complete sets from one supplier: COLO.Science supplies culture media, supplements, rapid tests, identification kits and QC strains as complete sets for the method you follow. Send us your sample types and standards, and we will prepare an offer with the matching products and documentation.
Chromogenic Shigella Agar Supplement is supplied by COLO.Science in the pack sizes listed under Ordering information. For larger quantities, regular deliveries or method-specific sets that include Chromogenic Shigella Agar Supplement, please send us a request. With every delivery of Chromogenic Shigella Agar Supplement you receive the lot number and expiry date, and on request we send the available documentation for Chromogenic Shigella Agar Supplement.
Where Chromogenic Shigella Agar Supplement fits in Shigella and Yersinia testing
- Enrichment – Shigella broth with selective supplement; for Yersinia a peptone-sorbitol-bile type broth
- Selective isolation – Chromogenic Shigella Agar, Desoxycholate Citrate Agar, XLD; for Yersinia CIN agar and Chromogenic Yersinia enterocolitica Agar
- Screening – qPCR or LAMP kits after enrichment
- Confirmation and QC – biochemical identification kits and reference strains
See all Shigella and Yersinia products in the Microbiology Catalogue →
Ordering information
| Product | COLO code | Pack |
|---|---|---|
| Chromogenic Shigella Agar Supplement | PRO7705 | 8 g |
Product notice: preparation, storage conditions and shelf life are given on the label. Technical data on this page are for orientation; the label and the lot documentation apply. B2B prices are quoted net, excluding VAT.
Sales and technical support
COLO LabExperts
Polje ob Sotli 4, SI-3255, Slovenia
Quotations and technical support for culture media and microbiology products across our international sales territory. B2B prices are net, excluding VAT.
COLO.SCIENCE | MICROBIOLOGY SUPPORT
Need the complete set for your method?
Send the sample type, target organism and the standard you follow. COLO.Science will put together the media, supplements, QC strains and confirmation tests for the whole procedure.
