Compact Dry XSA
- Ready and easy to use portable plate: Preparation of medium is not required, which eliminates waste of medium as well as sterilizing apparatus to prepare the medium.
- Detection of colonies on plate is simple and clear.
- Single colonies on the plate can be isolated for further identification tests
Compact Dry X-SA is a simple and safe test method to detect and quantify Staphylococcus aureus. These are spherical bacterium typically found arranged in clusters under the microscope. Its potential pathogenicity comes from its the ability to form enterotoxins (SET), which accumulate in the food when contaminated and cannot be completely inactivated even by heat treatment. Food contamination with S. aureus almost always comes from humans (hand, sneezing, coughing). S. aureus is therefore also considered an indicator of inadequate personal hygiene
Incubation time and temperature: 24 ± 2 hours at 35 ± 2 °C, AOAC recommendation 35 ± 2°C, NordVal / MicroVal recommendation 37 ± 1 °C
Shelf life: Room temperature (+ 1 to + 30 °C)
Storage: 21 months after manufacturing
Sample pretreatment
Viable count in water or liquid foodstuff
Drop 1 ml of specimen (dilute if necessary) on the middle of the Compact Dry plate.
Viable count in solid foodstuff
Add buffer solution to the sample and homogenize by stomacher®. Drop 1 ml of specimen (dilute if necessary) in the middle of the dry sheet of the Compact Dry plate.
Viable count in swab test specimen
Use the swab to wipe the surface, put into the device with wiping solution. Drop 1 ml of wiping solution (dilute if necessary) in the middle of the Compact Dry plate. It is recommended to use Swab for Compact Dry offered by HyServe Id-No. 1 002 952/3 (40/240 pieces).
Test instructions
Open the cap and drop 1 ml of specimen in the middle of the Compact Dry plate.
Specimen diffuses automatically and evenly into the sheet and transforms the dried sheet into a gel within seconds.
Put the cap again on the plate and write the information needed on the memorandum section.
Turn over the capped plate and put in the incubator.
After incubation count the number of light blue/blue colonies. White paper placed under the plate helps to count the colonies.