Mixing cuvette
AssigneeEppendorf Geratebau Netheler & Hinz GmbH
InventorsGerhard Lahme, Dieter Solter, Hermann Bohnsack
Life of this patent
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Abstract
A mixing cuvette for mixing different substances introduced therein by high speed rotary mixing, the cuvette being of a relatively small capacity but defining a great filling height. The cuvette body is elongated and encloses an internal cavity defined in its upper portion by a peripheral side wall that merges into a polygonal multi-surface lower portion. This cavity is open at the top and closed at its bottom. The lower portion includes a measuring region with a pair of opposite planar parallel surfaces through which may be directed a photometric measuring beam.
Claims10
A mixing cuvette suitable for the mixing of substances by rotational motion, particularly high speed circular horizontal movement thereof, said cuvette comprising:
- an upward generally cylindrical portion and a lower measuring portion contiguous therewith;
- a longitudinal central axis extending through said upper and lower portions;
- a bottom wall containing an inner bottom surface defining the lower termination of said lower portion;
- a pair of opposed generally planar parallel wall portions extending upwardly from said bottom wall defining therebetween a photometric measuring region of said cuvette, with a photometric measuring direction of the cuvette being defined to extend across said measuring region perpendicularly to said opposed wall portions;
- and a pair of V-shaped side walls each extending between said opposed parallel wall portions on opposite sides of said measuring region;
- each of said V-shaped side walls defining an interior surface of said lower portion of said cuvette having an apex located on a plane containing said longitudinal central axis and extending perpendicularly to said measuring direction;
- each of said interior surfaces including surface portions extending from said apex and defining an obtuse angle therebetween to effect an enlargement of the interior of said cuvette through a central region of said measuring portion extending perpendicularly to said measuring direction.
A mixing cuvette comprising an upper portion and a lower portion, a longitudinal central axis extending through said upper and lower portions, a pair of opposed wall portions extending generally parallel with said longitudinal axis and defining therebetween a photometric measuring region of said cuvette, with a photometric measuring direction of the cuvette being defined to extend across said measuring region, a pair of side walls each extending between said wall portions on opposite sides of said measuring region, said side walls being configured to define a pair of opposed concave interior surfaces of said measuring region, said concave interior surfaces being shaped to effect an enlargement of the interior of said cuvette through a central region of said measuring portion extending perpendicularly to said measuring direction.
Dependencies are inferred from the claim text.