Thermoelectric semiconductors have been successfully applied in the laboratory and analytical instrument industry, making significant contributions to its development. In laboratories, it is necessary to culture cells, bacteria, and microorganisms. To achieve specific experimental results, precise temperature control is required for laboratory instruments such as fermenters, digital microscopes, centrifuges, incubators, liquid chromatographs, and metal constant temperature baths. Semiconductor thermoelectric systems can provide such temperature control to ensure stable and adjustable temperature conditions.