Industrial Test Systems Sensafe 481197 WaterWorks™ Bacteria CheckIndustrial Test Systems Sensafe WaterWorks Bacteria Check Model 481197 Simple, accurate coliform bacteria screening for drinking water in 48 hours Total coliform detection No lab equipment required Positive negative results Multiple tube method The Sensafe 481197 WaterWorks Bacteria Check delivers reliable coliform bacteria screening without the complexity of traditional laboratory methods. Using a modified multiple tube protocol, this system tests