Starting laboratory instrument design: sample, process and use
In the first discussion, describe the instrument's task through everyday use. Is the sample liquid or solid, how many samples are processed at once and when does the operator intervene? Working volume, temperature range, duration and cycle count establish design boundaries. If an experimental method or working setup exists, its measurements and observed problems are valuable inputs.
A research prototype may prioritise access to frequently changing settings. A commercial product may instead prioritise clear operation, cleanable surfaces, controlled settings and service access. These expectations form the requirements list, which also defines acceptance measurements. Time to target temperature, dosing repeatability and complete record creation, for example, are evaluated separately.