SAETT ATT AATERSTAELLA DEN URSPRUNGLIGA FAERGEN HOS ETT GENOM RADIOAKTIV STRAALNING MISSFAERGAT SALT, SAMT BESTRAALAT, STERILISERAT NATRIUMVAETEKARBONAT MED AATERSTAELLD FAERG

摘要

A salt sterilized by radioactive radiation, e g gamma irradiation and/or beta irradiation of the type which obtains a discoloration on irradiation, characterized in that its original colour is wholly or partly restored. The invention relates also to the actual method for restoring the original colour of such a salt and the method is characterized in that it takes place with the help of heating to appropriate temperatures for appropriate durations of treatment.