Dedicated Analytical Solutions
bactoscan FC+

10-03-2015

Rapid bacteria count method approved on both sides of the Atlantic

BactoScan FC+ is EU-RL (EU Reference Labs) approved

The FOSS BactoScan FC+ instrument is now the only rapid method for testing bacteria count in raw milk to be approved by both the EU-RL in Europe and NCIMS/ FDA in the USA.

The EU-RL certification of the BactoScan FC+ has been performed in accordance with EN ISO/DIS 16140-2:2013, the EURL MMP criteria and the Microval Rules and Certification Scheme. In short, this validates the BactoScan FC+ as a method which is least equivalent to reference method based on plate counting of bacteria colony forming units (EN-ISO 4833-1:2013, parts 1 and 2).

Approved in the USA and Europe

FOSS was the first to develop the rapid bacteria count method in the early 1980’s. The EU-RL certification adds to an existing FDA/NCIMS certification as a rapid electronic counting method in the USA. It is the only rapid method for bacteria count in raw milk to have both approvals.

The BactoScan FC+ has become the industrial standard for counting total bacteria in many countries all over the world. In contrast to the reference method, the rapid BactoScan FC+ test measures individual bacteria cells using a technique called flow cytometry. With the technique, a suspension of cells is stained and forced through a capillary tube which is illuminated in front of a microscope objective. Every passing cell is then registered by photo electronics attached to the microscope.

An individual result is delivered in just nine minutes compared to the two to three days it takes with plate counting. The BactoScan FC+ can test up to 200 samples in an hour.

The importance of rapid tests

The rapid results are important because catching hygiene breaches in raw milk early is essential for minimizing the impact on milk quality. Although pasteurisation will kill the majority of bacteria, their metabolites may cause off flavours and enzymes continue their activities resulting in product defects and reduction of shelf life.

With the traditional plate count method, hygienic problems on the farm may go undetected for days, making correc­tive actions more difficult and production losses larger than necessary. With the BactoScan test, farmers can be advised about possible problems the same day as the sample is drawn allowing timely correction for leaks, insufficient cleaning or cooling in the milking system, or health problems in the herd.

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