The Hach DR300 Pocket Colorimeter is the next generation in portable instrumentation. Reduce data collection hassles, eliminate transcription errors, and ensure stronger compliance traceability. Proven past, innovative future: build on the tried and true Hach Pocket Colorimeter II – used by hundreds of thousands of water professionals in harsh conditions for almost two decades – and improved with key mechanical improvements such as upgraded waterproofing; larger display; ergonomic design. Then infused with the smart capabilities that modern technology has to offer: optional Bluetooth connectivity with automatic data transfer, and seamless system integration.