Microbiological testing (RODAC)

Rodac plates (RODAC = Replicate Organism Detection And Counting) can be used for microbiological control of all surfaces. For example for textiles (finished product inspection) or other end products and the control of folding tables, conveyor belts, trolleys, containers etc..

Rodac plates are very suitable for use in the industrial cleaning area. With the help of these plates you have a simple and quick method to check all kinds of surfaces for microbiological contamination and the hygienic status of the surface.

Scope of applicationRODAC SET

  • Textiles (finished product inspection) For the control of textiles types S, E and T are used in combination.
  • Transport equipment and workplaces (eg Conveyors, folding tables, trolleys / containers, etc.) For routine monitoring of such surfaces the type T is sufficient. In case of positive reaction it can be examined further.
  • Drying and finishing (eg filling hole dryer, mangle, sheet feeding / folding / stacking system, etc.) For routine monitoring of such surfaces the type T is sufficient. In case of positive reaction it can be examined more specifically.
They are packaged in sets of 10. Printing is easy and the Rodac plates should be incubated. In order to stack several Rodac plates properly and effectively, we offer a convenient Rodac holder.

Want to learn more about Rodac plates? We will happily give you details and instructions via contact or email: info@ccd.eu .

Rodac Types

 Rodac plates are available with a lot of different growth media. For application in the industrial cleaning area 3 standard types are used:

  • S – for determining the amount of Staphylococcus aureus.

   Rodac type BPA (Baird Parker Agar). Staphylococcus aureus is a bacterium which is one of the most important causes of skin or wound infections as well as infections of the internal organs. Also in the food industry it is a not desired bacterium because it forms toxins that may result in food poisoning.

  • E – for determining the amount of Enterobacteriaceae

   Rodac type VRBGA (Violet Red Bile Glucose Agar). This type is used for the detection of possible presence of Enterobacteriaceae. This group of bacteria includes Salmonella and Klebsiella.

  • T – for determining the total amount of micro-organisms (general hygienic state)

   Rodac type TSA (Tryptone Soya Agar) + Tween 80 + Lecithin. This type is eg described in the AFNOR (France), the recommendations of the Health Council (Belgium), RAL (Germany). In comparison with the PCA (Plate Count Agar) TSA is (T.  S.  Agar) richer in nutrients and containing the Tween and Lecithin for the inactivation of inhibitory substances.

The Rodac plates can be ordered together as a SET (Type S, E and T, 10 plates per type) or per roll (10 plates) of a specific type. For other culture media please contact us.

Textile standards

The Netherlands (Certex / WIP richtlijn), Frequency: Monthly (with equal intervals on alternating days)

Hygiene controls end product (textiles)

Type T (total plate count)
Type E (Enterobacteriaceae)
Type S (Staph. aureus)

: ≤ 2 kve/cm2
: 0 kve
: 0 kve

Hygiene controls of transport, workplace, drying and finishing equipment
Standard: ≤ 2 kve/cm2

Belgium (Hoge gezondheidsraad), Frequency: at least annually

Hygiene controls end product (textiles)

Type T (total plate count)
Type E (Enterobacteriaceae)
Type S (Staph. aureus)

: ≤ 12 kve/ 25 cm2
: 0 kve
: 0 kve

Germany (RAL 992/2 Healthcare linnen)

Hygiene controls end product (textiles)

Type T (total plate count)
Type E (Enterobacteriaceae)
Type S (Staph. aureus)

: ≤ 20 kve/ dm2 *
: 0 kve
: 0 kve

* for at least 9 of the 10 controlled itemsCCD Rodac houder

Hygiene controls of transport, workplace, drying and finishing equipment
Standard: ≤ 100 kve/ dm2

Microbiological Training
CCD has a training module in its portfolio in which microbiological knowledge, testing methods and hygiene in the field conditions of the laundry are taught.

CCD Rodac Plate Rack
We also have a Rodac Plate Rack (20 plates) in our range, which makes the sampling and incubation easier.

Incubator
CCD offers a digital incubator specially adapted for microbiological applications, see: https://www.ccd.eu/en/products/Measuring-Equipment/incubator-microbiological-analyses

Subscription Service
The Rodac Plates are also available as part of our subscription service. This ensures you have sufficient materials on the right moment and you will have no issues with exceeding the expiry date. For more test materials which can be ordered via the subscription service, see: https://www.ccd.eu/en/products/test-materials