Method for measuring scattered light and apparatus for measuring scattered light

An apparatus for measuring light scattered on a sample in a medium, in particular a fluid medium, the apparatus comprising:

• a measuring cell (3) arranged to be rotatable about an axis of rotation and arranged in a fixed manner in the direction of the axis of rotation and which has a substantially circular cross-section in a plane perpendicular to the axis of rotation for receiving the medium with the sample,
• a drive for rotating the measuring cell by 360° about the axis of rotation,
• a laser (1) for emitting a laser beam (2) onto the measuring cell in the plane perpendicular to the axis of rotation, and
• at least two detectors (4) that are attached in a fixed manner relative to the laser beam and in a circle concentrically to the centre of rotation of the measuring cell in order to detect light scattered on the sample at different angles of rotation of the measuring cell within set, different angular ranges.

A method for measuring light scattered on a sample located in a medium, in particular a fluid medium, comprising:

• providing an apparatus having:
• (a) a measuring cell (3) that can be rotated about 360° and that is attached in a fixed manner in the direction of the axis of rotation and which has a substantially circular cross-section in a plane perpendicular to the axis of rotation for receiving the medium with the sample,
• (b) a drive for rotating the measuring cell by 360° about the axis of rotation,
• (c) a laser (1) for emitting a laser beam (2) onto the measuring cell in the plane perpendicular to the axis of rotation, and
• (d) at least two detectors (4) that are attached in a fixed manner relative to the laser beam in a circle concentrically to the centre of rotation of the measuring cell in order to detect light scattered on the sample at different angles of rotation of the measuring cell within set, different angular ranges;
• using the apparatus to measure light scattered on the sample located in the medium, in particular a fluid medium.