6 lyophilized pellets de un simple microorganismososos strain for Control de calidad:
LYFO DISK™ Escherichia coli derived from NCTC 13353
LYFO DISK™ Escherichia coli derived from NCTC 10538
KWIK-STIK™ Escherichia coli derived from NCTC 13351
LYFO DISK™ Escherichia coli derived from ATCC® 10536™