Test strip device with volume metering capillary gap

Abstract From the Canadian patent

A method for quick and rapid reading of a dip and read device in a liquid sample using a device having a reactive surface and a capillary gap for controlled fluid flow comprising two opposing surface areas spaced apart throughout a capillary zone of intended liquid transport at a distance no greater than that which will maintain a capillary flow of liquid introduced therebetween, means to permit introduction of a test specimen between these surfaces, there being formed between said opposing surfaces an air vent means to permit any entrapped air to quickly escape from the sample chamber and thereby avoid interference with the observation of the test results. MS-1482