Hitachi-high-technologies Corporation

Chie Sugiyama

Masato Ishizawa

Shigeki Matsubara

Minoru Sano

Yoshiyuki Shoji

Kohshi Maeda

In the field of automatic analyzers, as items to be analyzed are increase, various reagents differing in such properties as liquid viscosity and contact angle are being used more frequently, and this trend is expected to continue. Also, reagents now take various forms (e.g., a concentrated reagent to be diluted by the water of an automatic analyzer), and so does dilution water. Such being the case, the invention provides an automatic analyzer capable of sufficient stirring regardless of items to be analyzed. To sufficiently stir a substance to which a reagent has been added, the automatic analyzer is designed to alter stirring conditions after a given amount of time has passed since the addition of that reagent.

Automatic analyzer

According to a conventional technique, when a calibrated temperature measuring probe is used for correcting the temperature absolute values of individually temperature-controllable thermal control blocks, a temperature difference of a maximum of 0.5&#xb0; C. remains between the thermal control blocks. According to the present invention, the melting temperature of a temperature calibration sample housed in a reaction vessel corresponding to each of the temperature control blocks is measured as a measured melting temperature. The measured melting temperature corresponding to each of the thermal control blocks and the reference melting temperature of the temperature calibration sample are compared, and the temperature absolute value of each of the thermal control blocks is corrected based on respective difference values.

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Mito, Japan

Chie Sugiyama