Laboratory instrumentation is the use or application of instruments for observation, measurement, or control. It involves the use of or operation with instruments; especially: the use of one or more instruments in carrying out laboratory tests. Instrumentation is the development or use of measuring instruments for observation, monitoring or control. The use of UV spectrophotometry (to measure light intensity) and gas chromatography. Laboratory instrumentation is a collection of laboratory test equipment. Such a collection of equipment might be used to automate testing procedure. It could also include: “The design, construction, and provision of instruments for measurement, control, etc; the state of being equipped with or controlled by such instruments collectively.” Laboratory Instrument is any implement, tool, or utensil used for laboratory test. An instrument is a device that measures a physical quantity, such as flow, concentration, temperature, level, distance, angle, or pressure. Instruments may be as simple as direct reading hand-held thermometers or as complex as multi-variable process analyzers. Medical instrument is a device used to diagnose or treat diseases. A tool or device used for a particular purpose; especially: a tool or device designed to do careful and exact work. A device that measures something. Laboratory equipment, the measuring tools used in a scientific laboratory, often electronic in nature. Laboratory equipment refers to the various tools and equipment used by scientists working in a laboratory. Laboratory equipment is generally used to either perform an experiment or to take measurements and gather data. Larger or more sophisticated equipment is generally called a scientific instrument. Both laboratory equipment and scientific instruments are increasingly being designed and shared using open hardware principles.The classical equipment includes tools such as Bunsen burners and microscopes as well as specialty equipment such as operant conditioning chambers, spectrophotometers and calorimeters.