Farmacarb Hemodialysis Disinfectants Farmacarb has different formulations (Citric50, Citric021 and Citric30) for the disinfection of hemodialysis machines. FARMACARB C50 Disinfectant - 50% Citric Acid Solution, 50% citric acid liquid concentrate is manufactured for the use in hemodialysis machine citric-heat disinfection, decalcification and cleaning. It is to be used in accordance with the hemodialysis machine manufacturer's citric-heat disinfection procedure instructions. .Farmacarb C.M.L. 2,5 liquid concentrates (CITRIC30 and CITRO21) are manufactured for the use in hemodialysis machine citric-heat disinfection, decalcification and cleaning. It is to be used in accordance with the hemodialysis machine manufacturer's citric-heat disinfection procedure instructions.