GBS Detect™ is recommended for the isolation and differentiation by enhanced hemolysis of detection of gamma-hemolytic (non-hemolytic) Group B Streptococcus from GBS enrichment broth procedures. Features and Benefits: Optically clear polystyrene For distortion free viewing. Heavy-Duty Reduces breakage during shipping. Stacking rings Polystyrene Petri plates feature raised rings for stacking ability and prevents sliding. Breathable Packaging Packaged in sleeves of 10 plates in a "breathable" bag that prevents buildup of condensation and excess moisture.