A device is a heated gas spectral measuring cell made with the use of waterproof optical material of zinc selenide and equipped with injector for syringe injection of liquid and gaseous samples. The device is intended for rapid and reliable safety assessment of alcoholic and non-alcoholic drinks, household and auto chemical products and liquid pharmaceutical products as well as for analytical control of volatile toxic substances in biological fluid and human secretions. The scientific novelty of the device lies in the original layout of gas measuring cell for recording IR spectrum using optics from waterproof optical material and a syringe injection system for liquid samples. The novelty is confirmed with a patent on the utility model.