Hanna instruments®, a world leading manufacturer of analytical instrumentation, has a network of 60 subsidiaries in 43 countries worldwide and offers over 3000 products to its customers. Hanna is headquartered in Woonsocket, RI, USA. Hanna serves a variety of markets from Food & Dairy to Hydroponics, Agriculture to Industrial and many more. Hanna Instruments has a history of developing innovative products that make analytical measurements easier to perform at an affordable price. Many innovations introduced by Hanna are now the norm for the instrumentation industry. These innovations include pH electrodes with built in temperature sensor, Waterproof portable pH meters, Single parameter colorimeters, Single probe portable conductivity meters, Multiparameter handheld testers and Multiparameter portable meters with built-in GPS.