laboratory diagnostic - testing and comparison - biological samples and assessment reports - quality control - internal - reference strains - qualitative - Enterococcus faecalis (Streptococcus faecalis), equivalent collections 19433, NCTC 775, DSM® 20478, WDCM 00009, vial x10 discs, keep in the freezer, C.F.U between 10^6-10^9, freeze-dried, water-soluble, used in solid or liquid media, code L37RS1013-10, todylaboratories®