Total Plate Count; Total Coliform Count; Total Coliform NMP; Positive Staphilococcus aureus coagulase; Yest and Moulds; and Salmonella Method: NOM-111-SSA1-1994, NOM-113-SSA1-1994, NOM-115-SSA1-1994, NOM-114-SSA1-1994, NOM-092-SSA1-1994