Compact Dry CF

Safety Data Sheet

Guía Técnica

Description:

Compact Dry is a simple and safe procedure for determining and quantifying microorganisms in foodstuffs, cosmetics and other raw materials, including pharmaceuticals. The ready-to-use Compact Dry coliform chromogenic CF plates are suitable for both in-process and final product controls.

For rapid detection of coliforms: due to the chromogenic substrate X-Gal they form characteristic blue/blue-green colonies. The growth of other types of bacteria is considerably inhibited. Bacteria that could grow would appear without any coloration.

Specifications:

Matrix:	Raw materials, finished products, environmental samples from the food, cosmetics and pharmaceutical industries, among others.
Incubation time and temperature:	Incubate at 37 ± 1 °C for 18-24 ± 2 hours
Presentation:	40 and 240 plates

Mode of use:

Remove Cover.
Deposit 1 ml of the sample in the center of the surface of the Compact Dry plate.
The sample is automatically and homogeneously dispersed on the film and transforms the dry film into a gel in a few seconds.
Replace the cover on the plate. Incubate for the prescribed time.

Weigh the sample

Add the diluent

Homogenize the sample

Removing the plates

Remove the cover

Add 1 Ml of sample

Wait for the sample to be absorbed

Put the plate down

Bring the plate in incubation

Perform reading

Important note The flow chart applies for solid and liquid samples, for water analysis the membrane filtration technique will be used and for environmental samples: swabbing or sedimentation techniques as appropriate.

Interpretation of results:

Coliforms grow to develop blue/green colonies, as the medium contains the substrate for the chromogenic enzyme X-GAL. Bacteria other than coliforms are inhibited from growing, and do not form colored colonies, even if they do grow.

Storage and shelf life:

Keep at room temperature, from 1 to 30 °C. 18 months shelf life.