Hemocue Ab

Migrata UK Ltd.

Bertil Nilsson

Lars Jansson

Jan E Lilja

Sven-Erik L Nilsson

Johnny Svensson

Per Olsson

Anders Williamsson

Stefan Wahlqvist

Bo J&ouml;nsson

The invention relates to a method for carrying out mixing in a thin liquid layer, which is arranged between essentially parallel walls at a capillary distance from each other. The mixing is carried out by subjecting the walls to a motion essentially in the plane of the liquid layer, balancing the motion against the capillary force exerted by the walls on the liquid, and selecting the interface between the liquid layer and the surrounding medium so that it functions as an elastic membrane. The invention also concerns a cuvette which is designed for mixing according to the method.

Mixing method

A photometer for determining the transmission of a liquid sample in a microcuvette (,) has a cavity for a capillary layer of the liquid sample with a free liquid surface extended transversely of the principal plane of the cavity. The cavity is initially prepared with a reagent to achieve a reaction, which affects the transmission of the liquid sample for indicating its contents of a predetermined substance. The photometer has a holder (,) for the microcuvette and measuring means (,) for measuring the transmission of a bundle of rays directed towards the microcuvette. The cuvette holder (,) is mounted on bearings for vibration in a direction having a component, which extends in the plane of the free liquid surface and is parallel with the principal plane of the cavity, thereby achieving a mixing to accelerate the dissolution and the reaction.

Photometer and cuvette for mixing

A method is provided for monitoring the cooking temperature of meat patties. More specifically, a method is provided for monitoring the cooking temperature of meat patties by determining the concentration of colored compounds, such as myoglobin, in meat juice.

Method for determining the concentration of colored compounds in meat

The present invention is related to an integral capillary microcuvette comprising a body member and a cavity including a measuring zone within the body member. The cavity is defined by two opposite, substantially parallel inner surfaces of the body member and includes an outer peripheral edge comprising a sample inlet and an inner peripheral zone having a channel of higher capillary force than the measuring zone. The channel extends around the entire inner peripheral zone with ends of the channel communicating with the atmosphere at the exterior of the microcuvette.

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Bjarred, Sweden

Bertil Nilsson