All prep packed and cut salad in supermarkets is washed in a hypo mix before packaging to kill off bacteria and give it a longer shelf life , it’s put into swimming pools and you get it in your eyes , doesn’t blind or kill you , in America they inject it in all meats again to kill off bacteria to give it a longer shelf life this is why certain groups in this country don’t want a trade deal with America due to this . It’s also in all drinking water , so people who are worried about it will find it difficult to get away from it being used in the food industry , provided it’s used safely it’s like any other product dilution rate for the job in hand is key , wether we like it or not it’s difficult to get away from hypo in our everyday products .