laboratory diagnostic - PT EQA samples - microbiology - reference strains - Streptococcus pyogenes (Streptococ beta-hemolitic group A) equivalent 19615 / NCTC 12696, 1 disc uncaracterised, vial, unlabeled, keep at freezer (-20°C+8°C), self life 3 months, , code L37EQ1062-1, todylaboratories®