ROTI®Plate90 CN

Sterile ready-to-use culture media plates for microbiological analysis.

ROTI^®Plate90 are prepared culture media plates with a diameter of 90 mm. They are thus adapted to the size of membrane filters for assaying of low-germ fluids by membrane filtration method. They are also applicable for the microbiological analysis of samples in general.

The germs of expected low-germ liquid samples are concentrated by membrane filtration. Afterwards, the membrane is placed on top of the medium and incubated. Using a membrane with a grid helps counting the resulting colonies.
Our products are tested and approved exclusively for research and development.

Samples which are expected to have a higher microbiological burden are prepared in a serial dilution. Afterwards, every dilution step is plated and incubated. The number of grown colonies is noted as result.

Pseudomonas CN Agar is a selective medium for the isolation and enumeration of Pseudomonas aeruginosa by membrane filtration.
It is recommended by ISO Standard 16266:2008 for testing water samples for the presence of Pseudomonas aeruginosa.

Cetrimide is included in the formulation of the medium as a selective agent, nalidixic acid suppresses species such as Klebsiella, Proteus and Providencia. Potassium sulphate and magnesium chloride provide the cations needed to activate pyocyanin production.