HiCromeâ„¢ Coliform Agar w/ SLS is a selective medium recommended for the simultaneous detection of Escherichia coli and total coliforms in water and food samples (7). HiCromeâ„¢ Coliform HiCynthâ„¢ Agar w/ SLS is prepared by completely replacing animal based peptones with chemically defined peptones to avoid BSE/TSE /GMO risks associated with animal peptones.