
Overview
RAPID'Staph Medium is a selective agar used for the direct enumeration of coagulase-positive staphylococci (Staphylococcus aureus and other species) in products intended for human or animal consumption or in environmental samples.
Key Benefits
- Results in 24 hr after 24 hr of enrichment
- Highly selective and easy to read
- Choice of two methods for easy confirmation
Principle
The principle of RAPID'Staph Medium is based on an optimized Baird-Parker formula to guarantee the detection and enumeration of S. aureus in 24 hr at 37°C. Typical staphylococci produce gray to black colonies that are shiny and convex (1–2 mm) with a clear 2–5 mm halo due to proteolysis of the egg yolk.
Presumptive colonies can be confirmed using one of the following methods:
- Pastorex™ Staph-Plus Latex Agglutination Test (56356) with results within minutes
- Spot inoculation on Baird-Parker + RPF agar (3563996) to confirm many colonies on the same plate
RAPID'Staph Chromogenic Assay

Enzymatic Activity |
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Potassium tellurite reduction | yes | yes |
Egg yolk proteolysis | yes | no |
Ordering Information
RAPID'Staph Medium is available as a package of 20 ready-to-use agar plates (3563960) and as a dehydrated broth agar base (3564704).
When using the dehydrated broth base, Egg Yolk with Potassium Tellurite Supplement (3554201), (3554205) and Sulfamethazine Solution Supplement (3562682) need to be added to the molten agar prior to pouring plates.
Specifications
Ordering
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Pkg of 1, kit contains 6 x 90 ml bottles of base medium and 6 vials of rabbit plasma fibrinogen (RFP) supplement
Pkg of 20, prepared plates of Baird-Parker Agar with rabbit plasma fibrinogen (RFP), 90 mm diameter
Pkg of 1, 500 g of dehydrated agar base
Pkg of 50 tests
5 pkgs of 50 tests


Pkg of 1, 25 ml bottle
Pkg of 1, 2.5 ml vial
Pkg of 1, kit contains 6 x 90 ml bottles of base medium and 6 vials of rabbit plasma fibrinogen (RFP) supplement