NEWCharm Blue Yellow II is a microbial inhibition assay that detects inhibitors, such as antibiotics - the most common inhibitors found in raw milk. The Charm Blue Yellow II has achieved the Charm Gold Standard by establishing a new benchmark in sensitivity by detecting many antimicrobial drugs at a below EU MRLs (Maximum Residue Limits). It is designed for high volume screening of raw commingled and ultra-pasteurized cow milk.