Hardy Diagnostics Indole Spot Reagent and Indole Kovacs Reagent are recommended for use in determining the indole reaction of bacteria.Do not ingest, inhale, or allow to come into contact with skin. This product is for in vitro diagnostic use only. It is to be used only by adequately trained and qualified laboratory personnel. The Hardy Diagnostics manufacturing facility and quality management system comply with cGMP's and have achieved ISO 13485 certification as a medical device manufacturer.