Chapter 3
System description
3.2.7 Measuring chamber
The chemiluminescence measurement is carried out in the measuring
chamber with the aid of a highly sensitive photomultiplier.
The measuring chamber is sealed from all outside light influences.
Outside the measuring chamber are two independently controlled
injection pumps* for injection of the starter reagents. Each pump
operates with a constant volume of 200 µl. The starter reagents are
injected into the relevant cavity of the reaction module.
The geometrical arrangement of the injector ensures that with the
injection of starter 1, the reagent is injected against the wall of the
cavity of the reaction module.Starter 2 is injected straight into the
cavity of the reaction module. This ensures optimum re-suspension of
the magnetic particles and thus precise measurement of the light
signal generated. After each individual measurement, the reaction
solution is drawn off by suction. After the entire reaction module has
completed the measuring process, it is further transported to the
waste bag.
Operating instructions
Page 3-17