Intended use:

Usage of Compact Dry YMR (rapid) is a simple, safe and fast test procedure for determination and quantification of yeasts and molds in foods or raw materials – as well as pharmaceutical raw materials. The ready-to-use plates consist of a special 50 mm diameter petri dish containing a detection specific nutrient pad.

The incubation time from application of sample / sample dilution to the final evaluation is in cases of most food matrices only 48 hours. For some special food matrices which contain growth reducing substances the incubation time needs to be extended to 72 hours in total.

General Information:

Specific molds as well as yeast are used for industrial purposes (e.g. cheese production). Harmful genera of molds exist as well and are able to produce toxins (mycotoxins). Almost all molds have an allergenic potential related to their spore form capabilities.

During growth on the nutrient medium of Compact Dry YMR colonies of yeasts and molds show different color reactions and therefore they are easily to differentiate. The chromogenic substrate X-Phos initiates a blue coloration of nearly all yeast colonies. Molds will soon appear as light blue, diffuse looking colonies and later on form their typical three-dimensional structures in the air space between nutrient pad and plate cover. The coloration of the air structures might be different according to the special type of mold. Growth of bacterial species on Compact Dry YMR is inhibited by antibiotics which are added to the medium.

The ready-to-use, chromogenic Compact Dry plates are suitable for in-process controls as well as controls of finished products. With the optional additional product Promedia ST-25 swab test (Z0302) or Compact Dry Swab (ZCS1002953) which are both available from R-Biopharm, Compact Dry plates may also be used for surface sampling and therefore applied for quantitative hygiene monitoring even at surfaces which are difficult to reach.

Benefits:

  • Compact Dry YMR is therefore an extremely easy-to-use method and also convincing due to the high time saving; a confirmation test is also not necessary.
  • Rapid method.

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Accessories:

Certificates:

Specifications
Article NumbersHS9801 / HS9802
Test format HS9801: 100 nutrient plates,
HS9802: 40 nutrient plates,
four plates are packed in one aluminum bag.
Sample preparation Viable count in water or liquid foodstuff, in solid foodstuff or in swab tests.
Incubation time 48 - 72 hours at 25 - 30 °C
Detected analyte Yeasts = blue colonies, molds = cottony colonies with characteristic colors.
Evaluation Visual counting
E-mail linksales@r-biopharm.de
Files
InstructionsGerman/English
French
Italian
Spanish
Portuguese
MSDSHS9801-HS9802_german.zip (German)
HS9801-HS9802_english.zip (English)
HS9801-HS9802_french.zip (French)
HS9801-HS9802_italian.zip (Italian)
HS9801-HS9802_spanish.zip (Spanish)
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