FIELD: temperature and time measurement in process of sterilization. SUBSTANCE: compound for temperature-time indicator includes basic temperature indicator and pigment based of zinc oxide composition. Diaminotriphenylmethane is employed as basic temperature indicator and zinc oxide composition with sodium salt 4'-dimethylaminoazobenzol-4- sulfacid is used as pigment. Such composition of indicator provides for temperature control and time of its effect by color changes of compound in time without melting and adsorption of components of composition of indicator. EFFECT: simplified and reliable approach to temperature variations in time. 3 tbl
