Somalyser MK1, the somatic cell counter by Lactotronic


Assurance of milk quality

Somatic cells (predominantly white blood cells of the cow) are usually present in raw cow milk.  However the concentration of those can indicate whether the cow suffers a mastitis infection. During an infection the number of somatic cells increases due to the reaction of the immune system of the animal. Therefore the Somatic Cell Count (SCC) is seen as one of the main indicators of milk quality and is quantified by number of cells per ml of milk. Hence the higher the SCC the lower the milk quality.

Lactotronics Somalyser is convincing

The Somalyser MK 1 counts these somatic cells in milk in order to determine the hygienic quality of milk and thus to conclude the status of animal health.  The instrument contains a fluorescence flow cytometer, which is accurately counting the number of cells.

Lactotronic offers the Somalyser MK 1 as a manual instrument for individual sample analysis. In particular our instrument satisfies the demand of SCC instruments for lower numbers of samples.  Nevertheless the Somalyser is capable of analyzing three samples per minute, depending on preparation and is still providing the same precise and reliable results.

Manual Sample Preparation

Initially the operator manually takes a sample of cow milk with a small pipette, then feds it into an analysis tube and finally dilutes it with staining solution. Using this staining solution, the DNA of the somatic cells in a milk sample is stained for analysis preparation purposes. Afterwards the prepared milk sample in the analysis tube is supplied to the Somalyser, that is easily operated with a touch screen.

Measurement process

At the beginning of the process the Somalyser takes a small sample from the previously stained milk sample and passes it through the flow cell. During the measurement the flow cytometer dilutes the sample by means of the sheath flow. Thereby the addition of water ensures the dilution of the sample and the separation of the individual cells.
Fundamentally the working principle is based on light with a certain wavelength, which is targeted on the cell flow. By passing the flow cell the stained somatic cell is causing a fluorescence light pulse. In doing so a corresponding detector registers the light pulse and in this way counts the number of cells passing by. As a result the number of cells per milliliter is calculated by multiplication of the number of detected cells and the dilution factor.

Result presentation

Eventually the built-in screen is showing a relative histogram, which presents the real value of counted pulses registered by the detector as well as the actual cell count per milliliter. It is to be noticed that the measuring range of the Somalyser extends from 0 to more than 1,000,000 cells per ml. Furthermore the results can be printed and sent to a connected computer.

Purchasing arguments for the Somalyser

  • Intuitive software
  • Designed for routine analysis
  • Sustainable quality with warranty
  • Automatic cleaning
  • Early identification of udder inflammation can prevent productivity losses
  • Support of herd improvement

Somalyser HQ

Advantages of the Somalyser

  • Built-in touchscreen
  • Data is shown on screen and sent to the output port
  • Result is shown in cells/ml
  • Possibility to adjust the absolute count
  • Histogram shown per sample
  • Sample intake position easy accessible by operator in standing position
  • Possibility to assign an ID number to the sample
  • By entering a new batch no. the serial no. automatically starts with no. 001

Specifications of the Somalyser

  • Zero point measurement
  • Type of sample: raw milk
  • Measuring range: 0 – 10 million cells/ml.
  • performance range: 0.1 – 1.5 million cells/ml.
  • Capacity: 120 samples/hour (approx. 20 sec/sample)
  • Consumables: Cleaning detergent Decon 90 & Staining concentrates for 5 l
  • Accuracy: relative mean deviation from DMSCC (Direct Microscopic Somatic Cell Count) <10 %
  • Carry-over: <1%, usually below 0.3%
  • Repeatability:

CV <  6%          100k – 299k SCC/ml

CV < 4 %          300k – 499k SCC/ml

CV < 3 %          500k – 1500k SCC/ml


More information

If you are interested in our dairy analysis equipment, please do not hesitate to contact us or your local dealer. For more detailed information we would like to invite you to a presentation of Somalyser.

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