Staphylococcus aureus · Ready-to-use count plate
Staphylococcus aureus Count Plate – ready-to-use plate for S. aureus counts
The Staphylococcus aureus Count Plate is a ready-to-use film plate with a dried selective chromogenic medium. One millilitre of the sample suspension is added, and suspect S. aureus colonies are counted after incubation.
- No media preparation
- Magenta colonies = suspect S. aureus
- Countable range 20–200 colonies
How Staphylococcus aureus Count Plate works
The sample is pipetted onto the plate and spread by the cover film. Selective agents suppress the accompanying flora, and a chromogenic substrate colours S. aureus colonies magenta. For confirmation, the Staphylococcus aureus Confirmation Disc is placed on the plate.
Typical results
| Result | Appearance |
| Suspect S. aureus | Magenta colonies |
| Countable range | 20–200 colonies per plate |
Technical data
| Preparation | Ready-to-use plate; no preparation |
| Incubation | 36 ± 1 °C, 18-24 h, face up |
| Storage | Sealed at 2-8 °C; opened unused plates resealed in pouch, use within 4 weeks |
| Shelf life | 18 months |
Applications and practical notes
Rapid tests for Staphylococcus aureus give a screening result faster than the culture method of ISO 6888-1. Typical applications include:
- Screening of food samples for S. aureus
- Hygiene checks in production, catering and retail
- Laboratories that need results within a working day
- Follow-up of positive samples by the culture method
Working with Staphylococcus aureus Count Plate: Adjust the pH of the sample homogenate to 6.8–7.2 and incubate the plates face up, in stacks of no more than 20.
Good practice with rapid tests: store the kit as stated on the label, let the components reach room temperature before use and use each item only once. Record the lot number and the result, and confirm positive results according to the reference method when this is required.
About the Staphylococcus aureus methods: coagulase-positive staphylococci in the food chain are counted on Baird-Parker Agar according to ISO 6888-1, and typical colonies are confirmed with the coagulase test. For low numbers, ISO 6888-3 uses an MPN technique with Giolitti-Cantoni Broth, and the FDA BAM Chapter 12 describes direct plating and an MPN method with Tryptic Soy Broth containing 10 % NaCl. In pharmaceutical microbiology, the test for S. aureus in EP 2.6.13 and USP <62> uses Mannitol Salt Agar. COLO.Science offers media, supplements, rapid tests, identification kits and QC strains for every step.
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.
Staphylococcus aureus Count Plate is supplied by COLO.Science in the pack sizes listed under Ordering information. For larger quantities, regular deliveries or method-specific sets that include Staphylococcus aureus Count Plate, please send us a request. With every delivery of Staphylococcus aureus Count Plate you receive the lot number and expiry date, and on request we send the available documentation for Staphylococcus aureus Count Plate.
Where Staphylococcus aureus Count Plate fits in Staphylococcus aureus testing
- Colony count – Baird-Parker Agar with Egg Yolk Tellurite Emulsion (ISO 6888-1); alternatives: chromogenic S. aureus agar or Vogel-Johnson Agar
- Low numbers (MPN) – Giolitti-Cantoni Broth (ISO 6888-3) or Tryptic Soy Broth with 10 % NaCl (FDA BAM), then plating on Baird-Parker Agar
- Confirmation – coagulase test with Rabbit Plasma, latex kit or DNase Agar
- Pharmaceutical products – Mannitol Salt Agar for the S. aureus test of EP 2.6.13 / USP <62>; QC strains for media testing
See the complete Staphylococcus set in the Microbiology Catalogue →
Ordering information
| Product | COLO code | Pack |
|---|---|---|
| Staphylococcus aureus Count Plate | PRO7372 | 20 plates |
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
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Quotations and technical support for culture media and microbiology products across our international sales territory. B2B prices are net, excluding VAT.
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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.
