Instruments that perform the same tests simultaneously on all samples presented to it are termed:

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Batch processing is when an instrument runs the same tests on multiple samples in a single run. A batch analyzer is designed to take a group of samples, apply the same analytical protocol to every sample, and complete the entire batch before reporting results. This approach maximizes throughput and reagent efficiency in labs that routinely test many samples with the same panel. In contrast, a discrete analyzer processes samples one by one, often handling different tests for different specimens, which offers flexibility but not the synchronized, same-test-per-sample batch operation. Bar-code labeling is about identifying samples, not how tests are executed, and middleware is software that connects instruments to the lab information system. So the instrument type described is a batch analyzer.