02-561rLiquid medium for general use, with a high concentration of nutrients.rr500mL medium supplemented with 1 vial basis of ref. 06-128-008. Subsequently to prepare Preston Campylobacter Agar, add 1 vial of ref. 06-130LYO1. To prepare Preston Modified Agar, add 1 vial of ref. 06-135LYO1r- The addition of blood is needed. See section Additives.