Manufacturers OEM

Aptec Diagnostics N.V.

Industriepark West 42/C, 9100 Sint-Niklaas

Telephone +32 3 7662086
Fax +32 3 7775293

Trade fair hall

  • Hall 3 / D58
 Interactive Plan

Hall map

MEDICA 2016 hall map (Hall 3): stand D58

Fairground map

MEDICA 2016 fairground map: Hall 3

Our range of products

Product categories

  • 03  Diagnostics
  • 03.02  Immunochemistry (Immunology)
  • 03.02.08  Units and systems for the determination of immunoglobulins and plasma proteins

Units and systems for the determination of immunoglobulins and plasma proteins

  • 03  Diagnostics
  • 03.02  Immunochemistry (Immunology)
  • 03.02.10  Controls / Standards / Calibrators immunochemistry

Controls / Standards / Calibrators immunochemistry

About us

Company details

When a diluted antigen solution is mixed with a corresponding antibody, the reaction between the antigen and the antibody results in the formation of immune complexes.The solution becomes turbid.


Turbidimetry is based on an optical detection system that measure the turbidity, the concentration of very small particles suspended in a solution.

A light beam (incoming light, yellow arrow) sent trough a solution is scattered depending on the degree of turbidity.

A photodetector mesures the reduction in the intensity of the light beam (transmitted light, blue arrows).


Since the transmitted light represents a decreasing signal (the more turbid the solution, the more light will be absorbed), one normally refers to the ABSORBANCE – this being an increasing quantity in relation to the antigen concentration.

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