In a previous experiment (RB910492) we have made preliminary measurements of the rates of addition of muonium to vitamins C and E, as suggested by the ISIS panel. These rates showed that vitamin E reacts ca 25 times faster than vitamin C. This is in accord with the accepted antioxidant capacities of these materials. We now request beamtime to complete the work on these two vitamins and then to continue with the original objective of developing an antioxidant capacity measurement based of muonium implantation. We have chosen the four antioxidants, Carotenoid - lycophene (lipophilic); Carotenoid - beta carotene (lipophilic); Polyphenol - flavanol - quercetin (hydrophilic); Polyphenol - anthocyanin - cyaniding-3-glucoside (hydrophilic) for the next stage.