This equipment is particularly recommended for the study of the growth of vegetal and plant tissues, as well as for the execution of toxicity tests carried out according to IRSA, OECD and ASTM procedures. The conditions that can influence the growth and development of plants and microorganisms are primarily temperature and light, in addition to, naturally, the presence of water and nutritive substances. The temperature is as indicative of the climatic conditions as provision of light is essential for the biosynthesis of cellular components The lighting system is composed of fluorescent lamps and a system of scheduling when to switch them on and off, for the regulation of light intensity inside the chamber.