Abstract:
A spectrophotometer having a movable sample cell holder (1), formed with position detecting through-holes (11), for holding sample cells (2) and a detector (4) for measuring the light transmitting the through-hole (11) to detect a position of the holder (1).
Abstract:
A detector assembly for use with an analyzer instrument comprises a light source for providing a light beam for analyzing one or more substances in a sample. A detector is included for detecting light associated with the sample under analysis. An analysis station permits the light beam to enter the sample and shields the sample from extraneous light. The analysis station further permits light to pass from the sample to the light detector. A plurality of filters is selectively positionable in the light beam between the light source and the sample. These filters permit different wavelengths of light to pass therethrough so that selective light analysis of the sample may be performed.
Abstract:
@ Light generated by one ormore chemical reactions in a discrete array is determined, both as to emissions per reaction and as to relative location of the reactions, e.g. using a system comprising: a sample carrier having spaced-apart discrete areas each containing a reactant capable of emitting light photons if a reaction takes place; a photon receiver, for receiving photons emitted from each reaction simultaneously; and a signal generator coupled to the photon receiver, for generating a signal representing the x-y location of each reaction. The signal generator may be a photomultiplier, charge-coupled device or vidicon tube. The invention is particularly suited to the determination of reactions and non-reactions, e.g. between an array of labelled antibodies and a specimen potentially containing one or more complementary antigens, in an immunoassay.
Abstract:
A dispensing device, for dispensing reagent into an array of reaction wells (16) in a photographic recording apparatus, comprises an array of tubes (28) which are mounted in a support (23). The support (23) contains a common chamber (29) into which the tops of all the tubes (28) open. The chamber (29) is connected with atmosphere via an opening (32) which is sealable manually to retain liquid in the tubes (28) when the latter are immersed in a reservoir (40) and which is unsealed to dispense the liquid. The recording apparatus has a housing (10) closable at the top by part of the support (15) therethrough rests on a shutter (13) disposed above a photographic film holder (12). The plate (11) carries the reaction wells (16) in the holes (15).
Abstract:
A photometer with controllable heating plates both above and below the set of sample cuvettes. The photometer is in particular used so that the upper plate is regulated to be warmer.