Quality Control Appearance Light yellow to pink homogeneous free flowing powder Gelling Firm, comparable with 1.2% Agar gel Colour and Clarity of Prepared Medium Reddish orange coloured clear to slightly opalescent gel forms in Petri plates Reaction Reaction of 5.7% w/v aqueous solution at 25°C. pH : 7.2±0.2 pH 7.00-7.40 Cultural Response M1032: Cultural characteristics observed after an incubation at 35-37°C for 18-24 hours.