Abstract: The present invention relates to an apparatus for the detection of optical emission from individual members of a sample of micro-organisms where the flow is focused in a specific region, comprising an optical device including a light source configured to emit light in a first direction to individual members of the sample and a detection device configured to detect in a field of view optical emission from the individual members emitted in a second direction opposite to the first direction and excited by the light emitted by the light source and a fluid device including a storage reservoir configured to store the sample of micro-organisms, a pumping device, in particular, a circulation pump capable of producing different pulsed pressures to affect the flow configured to circulate the sample of micro organisms in the storage reservoir and wherein a capillary channel is arranged in the storage reservoir configured to allow a flow of individual members of the sample such that one individual member only is present

Abstract: Apparatus for measuring light scattering of a sample comprising a light beam source, means for collimating the beam and making it impinge on the sample in a perpendicular direction, at least one light sensor, and at least one spatial filter between the sample and the optical sensor, provided with two apertures, means for measuring the total power reaching the sensor and means for measuring the power of beams with a low k vector after the beam traverses the filter. The invention provides thus a simplified, portable and compact device for measuring different parameters like haze, turbidity, etc. can be built, for any sample and without the need of changing detectors.

Abstract: Apparatus for measuring light scattering of a sample comprising a light beam source, means for collimating the beam and making it impinge on the sample in a perpendicular direction, at least one light sensor, and at least one spatial filter between the sample and the optical sensor, provided with two apertures, means for measuring the total power reaching the sensor and means for measuring the power of beams with a low k vector after the beam traverses the filter. The invention provides thus a simplified, portable and compact device for measuring different parameters like haze, turbidity, etc. can be built, for any sample and without the need of changing detectors.