in an inoculation test, 1g of spores of C.sporogenes was supplied by a microbiolgy laboratory with a measured D.121 value of 1.2 min and at a concentration of 6 x 10^7 per g. After log reductions, the population of the microorganism was reduced to 2 x 10^-1. The can of food for process measurement has a mass of 500g what is the maximum process value that can be measured with these spores?