Eppendorf Ag

Gerd Joachim Eckert

Andreas Schirr

Rainer Treptow

Rainer Schliesser

Norbert Wittschief

Markus Lapczyna

Lutz Timmann

Arne Schafrinski

A method for the quantitative real time analysis of fluorescent samples is provided, at which each of the samples is excited to fluoresce by a sample individual light source () and the intensity of the light which is emitted by the samples is measured. For a highly precise measurement of even low light intensities for the purpose of reduction of the analysis time, each light source () is switched on and off-during a defined interval by a clocked pulse sequence of constant pulse frequency alternately. The measurement of the intensity of the emission light during these intervals is exclusively performed during the switch-on phases of the light, source ().

Method and device for the quantitative real time analysis of fluorescent samples

The invention relates to a method for photometrically investigating sample radiations of at least one sample, which are caused by the radiation of N emitter elements of at least one radiation element wherein said N emitter elements are emitting radiation during time periods which at least partially overlap, to detect the sample radiation of at least two samples as a sum signal during time periods which at least partially overlap and to evaluate the sample radiation of at least one individual sample from said sum signal.

Device and method for radiometric measurement of a plurality of samples

The invention relates to a laboratory apparatus for simultaneously carrying out reactions in a plurality of samples which are arranged in an array. The apparatus includes an illumination device, which emits illumination light onto the samples, a detection device, which generates a signal dependent on the light intensity of the light coming from the samples and which forwards the signal to an evaluation device, and a monitoring device for checking the functioning of the illumination device. The illumination device has a plurality of light-emitting diodes assigned in each case to one of the samples, and the monitoring device has electrical devices which can be used to perform an electrical functional check of the light-emitting diodes. The monitoring device is adapted to generate a signal when a functional disturbance of a light-emitting diode is ascertained.

Laboratory apparatus for simultaneously carrying out reactions in a plurality of samples

An apparatus for photometrically testing several specimens each irradiated by a light source, the light altered by the specimens being detected by an optical device and analyzed, the apparatus including a light source, a plurality of sample holders configured adjacent to one another on a support, a detector that receives altered light from sample within the sample holders, the detector including a filter for eliminating interfering light, a sensor having a sensor face and a diffusing optical member located between the filter and the sensor, wherein light is diffused and shines on a greater portion of the sensor surface, and with a more homogeneous brightness as compared to when the light is not diffused.

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Hamburg, Germany

Gerd Joachim Eckert