Disposable test device with sample volume measurement and mixing methods

• Main Author: COVILLE WILLIAM E
• Format: Patent
• Language: English
• Published: 06.10.2005
• Edition: 7
• Subjects: CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; TESTING; TRANSPORTING

A sample testing device has a volume chamber that separates a known volume of a sample from a remaining sample through the introduction of a fluid between the known volume of the sample and the remaining sample wherein the introduction of the fluid is through a fluid inlet port that has an open and closed state. The device further comprises a passage including a mixing chamber connected to the volume chamber and adapted to mix the sample; a test chamber connected to the mixing chamber and adapted to perform a test on the sample; and a vent port that has an open and a closed state. When the fluid inlet and vent ports are in the open state, the introduction of a pressurized fluid into the fluid inlet port drives the sample from the volume chamber, into one or more mixing chambers, and then into the test chamber.