MIC-016 Enterococci Presence/Absence 10 Samples………………..$205.00 A 10 sample set consisting of various combinations that are Enterococci positive (e.g. Enterococcus faecium or Enterococcus faecalis) Enterococci negative (e.g. Serratia marcescens or E. coli) and at least one blank. RT Corp is an A2LA accredited Proficiency Test Provider (cert# 2122.01), ISO 17025 Testing Laboratory (cert# 2122.02) and an ISO Guide 34 Reference Material Producer (cert# 2122.03)...(continued)