Abstract:
The invention relates to a method for measuring the absorbance of a sample. In accordance with the invention, an insert pervious to light is supported on a stand in the measuring well, the insert bottom being located below the sample surface. This allows the length of the light path in the liquid to be accurately selected.
Abstract:
The invention relates to a pipette comprising a housing, said housing comprising a suction chamber, said suction chamber provided with a movable piston, an adjustable, threaded retainer mechanism for retaining the piston's motion, said retainer mechanism being provided with a range adjustment threading, and a calibration mechanism for the motion of the piston. In addition, the pipette includes another adjustable, threaded retainer mechanism for retaining the motion of the piston, said retainer mechanism being provided with a fine adjustment threading with a pitch that is smaller than that of the range adjustment threading of the first retainer mechanism. According to the invention, the volume is adjusted rapidly and still accurately.
Abstract:
The invention relates to a fluorometer having a partly transparent mirror (27) through which excitation light is directed to the sample and via which emitted light from the sample is reflected. Thus a high sensitivity and, furthermore, as homogenous a measurement sensitivity distribution as possible within the vessel are achieved. Measuring can be carried out from either above or below. The invention is applicable for use especially when the fluorometer has simultaneously a plurality of samples.
Abstract:
The invention relates to a holder in which sample-holding plates can be handled. It has a retainer (49) for pressing a plate placed in the holder both against the back wall and against a side wall. Thus a plate of a certain type will always settle in the same position in the holder. It is also possible to use in the holder plates of many sizes, which can be kept in place during handling owing to the retainer. The invention is suitable for use in particular in assay methods in which samples to be assayed are handled on plates comprising a plurality of wells, for example in optical analysers or other apparatuses.
Abstract:
The invention concerns a determination method and equipment and an adapter for use in these. In the method, the sample is allowed to react with a separating reagent bound in a solid phase to the outer surface of particles (8) which are separated from the vessel, whereafter the particles are removed from the vessel using a remover (3.2) and they are taken to a measuring vessel, if required through one or several intermediate step vessels. At least one vessel contains a medium needed in a determination step to be performed therein when the particles are brought into this vessel. The invention is especially suitable for use in automatic immunodetermination systems.
Abstract:
Dosage equipment, which includes a peristaltic pump for the dosage of liquid. The set of hoses (17) of the peristaltic pump includes an upper piece (18) and a lower piece (19). The body of the pump includes an attaching piece (13), to which the upper piece and the lower piece can be attached.
Abstract:
An immunological assay system, wherein the inner face of the cuvettes is used as the solid phase. The equipment includes a displaceable carriage (8) for the cuvette set as well as, above the carriage, a dosage head (9), to which the liquid dosimeter (11) and the measurement device (19) are attached. All the operations take place automatically.