Analyser with fixed bar code reader

摘要

The analyser has containers (21-26) for the liquid to be analysed and for the required reagents. At least two container holders (11,12) are arranged parallel to each other. Each holds a number of identical containers in elongated chambers (51-1,...) in elongated bodies. All the chambers are perpendicular to a common base (42) and are separated by walls (43). Each chamber bears a bar code label (44) on an inner wall used to detect the absence of a container in a chamber. A second bar code label (45) is on an outside wall and is used to detect the position of the chamber in the container. The labels are read from the same side of the container by a fixed bar code reader. The reader has an device for automatic focussing according to the distance between the container and reader.