laboratory diagnostic - testing and comparison - biological samples and assessment reports - quality control - internal - reference strains - qualitative - Clostridium perfringens, equivalent collections 13124, NCTC 8237, DSM 756, WDCM 00007, 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 L37RS1009-10, todylaboratories®