Located at the corner of Pawtucket and Warren avenues since 1953, H2O Instruments is a local legend when it comes to water-related purification systems and/or marine motors and starters. H2O carries a complete line of Hanna Instruments, a leader in water-testing systems for both the consumer and the professional contractor. This is a niche business specializing in equipment and accessories that not many companies stock. The knowledgeable and friendly staff will help you find what you need to install to keep your family or employees safe from harmful chemicals in municipal water.