A test support for support-bound tests for the determination of components of fluids, especially of human and animal body fluids. The test support is composed of a plurality of layers, and the joining of the layers is accomplished at least partially by sewing.

A six-port network for characterizing a microwave or R.F. device includes a signal source (1) capable of generating three signals of the same frequency but relative phase differences, and combines each of the signals with a signal reflected or transmitted by the device. Two three-phase sources may be used in a dual six-port network device.

A DNA probe and method for detecting Campylobacter jejuni, which consists essentially of a DNA sequence that is: (a) derived from a chromosomal sequence of a bacterium of the species C. jejuni or C. coli but is less than the entire chromosomal sequence of that bacterium; (b) capable of hybridizing to DNA of at least 80% of bacteria that are in the species C. jejuni and/or C. coli; and (c) not capable of hybridizing to DNA of bacteria that are not in the genus Campylobacter. The method features d...

The invention relates to test strips for the detection of substances present in liquids and comprises a firm support and matrices impregnated with reagents. The matrices are spaced from one another on the support by means of adhesive strips, and the adhesive strips are covered with strips of film.

Method of detecting the presence of Salmonella in a food sample including providing at least one DNA probe which is capable of selectively hybridizing to Salmonella DNA to form detectable complexes, contacting the DNA probes with the bacteria in the food sample under conditions which allow the probe to hybridize to Salmonella DNA present in the food sample to form hybrid DNA complexes, and detecting the hybrid DNA complexes as an indication of the presence of Salmonella in the food sample.

A test module or reagent handling device for use with a clinical analyzer for conducting body serum assays and/or immunoassays; the test module coacting with the analyzer to selectively provide a plurality of liquid dilution and reagent materials to a serum sample, the test module having programmable valve means coacting with a dispense probe to serially: select a serum sample and to deposit said sample and liquid dilution material into a dilution cup or vessel; subsequentially withdraw a portio...

A plurality of units under test (UUTs) are coupled to a plurality of programmable test instruments via a switching network, whereby the test instruments are shared by test stations each associated with a respective UUT. The test stations communicate with a processor via respective serial ports to execute test programs for testing UUTs. The processor controls the switching network via a parallel port to set up desired connections, and programs the test instruments, via a bus interface and a bus t...

A gas analyzer includes a cell adapted to receive a gas mixture and a source of infrared energy adapted to introduce the energy through the cell. A particular gas in the cell absorbs the portion of the energy so that an electrical gas signal is provided which has a magnitude dependent upon the percentage of concentration of the particular gas in the mixture. This gas signal is introduced through a variable resistance and compared with a reference signal to provide an output signal for driving a ...

A test circuit for use with a boiler control circuit. A test switch and a lamp are connected between ground and a water level electrode. In the presence of a water path, a sufficient potential drop exists between ground and the electrode to light the lamp when the test switch is closed. If a ground or short exists, the lamp will not light.

A test fixture designed to measure selected electrical parameters of a wax which is utilized as a dielectric in telephone transmission lines. The test fixture is mounted on top of and plugged directly into a commercially available Q (quality factor) meter. A high Q coil is also mounted on top of and plugged directly into the Q meter. A T-shaped ground shield plate separates the test fixture from the coil, and also covers the front of both components to shield them from stray capacitance and inte...