Bard Urinary Drainage Bag with Anti-Reflux Chamber and Bard EZ-Lok Sampling Port. This urine drainage bag feature a rounded, teardrop shape that ensures more efficient drainage. Bacterio-static and drainage bags not made with natural rubber latex are also available. The bacterio-static collection bag is impregnated with a novel antimicrobial agent that resists pathogens commonly associated with CAUTIs. 2000ml.