Hach Company

Hach Lange Gmbh

Wayne Boris Perdue

Andreas Mitreiter

Richard Edward Leggett

Michael Kussmann

Manfred Battefeld

Clemens Hanschke

Bas De Heij

Carsten Schulz

Barbara Haase

Various turbidimeters are described that can detect light directly in a substantially circular, e.g., encompassing, manner such that an increased amount of scattered light from a sample vial may be detected by a light detector, e.g., a photodiode or photodiode array. In an embodiment, a substantially circular photodiode array is provided to directly detect scattered light in an arc about the sample vial. In other embodiments, light guides are provided in an arc element that guides light to a detector or detectors. Other aspects are described and claimed.

Turbidimeter

A turbidimeter for measuring a turbidity of a liquid sample in a sample cuvette includes a cuvette receiving device configured to position the sample cuvette in a defined cuvette position, a light source configured to generate a parallel light beam in the sample cuvette, an annular 45&#xb0; collecting mirror configured to surround the sample cuvette, a scattering body arranged concentric to the annular 45&#xb0; collecting mirror, a scattering light detector arranged to receive light scattered by the scattering body, and an annular 45&#xb0; concentration mirror arranged coaxially to the annular 45&#xb0; collecting mirror and optically opposite to the annular 45&#xb0; collecting mirror. The annular 45&#xb0; collecting mirror is arranged concentric to the light beam. The annular 45&#xb0; concentration mirror is configured to surround the scattering body.

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Berlin, Germany

Wayne Boris Perdue