California-based Aqua Metrology Systems (AMS) provides advanced real-time water quality analysers for contaminants such as trace metals in wafer and etching baths. The company’s flagship product, SafeGuard H2O, is an in-situ stannous generator designed to address metal contaminants. In 2014, AMS acquired TraceDetect assets, expanding its portfolio of monitoring equipment. AMS’ clients have included Samsung Austin Semiconductor, for which it provided its MetalGuard solution to treat copper wastewater streams.