Chemical reaction of STONE-TECH® depends on the temperature of the breaking object. Use the proper type accordingly as follows: SCA-I : For object temperature 20 SCA-II : For object temperature 10 SCA-III: For object temperature 5 SCA-IV: For object temperature -5 SCA-H: For object temperature 30 Stone-tech is packed in plastic bags of 5kg net each, 4 bags to one carton box, 50 carton boxes to one pallet (1 mt). Keeping stone-tech in a dry place. Shelf life is one year.