JENCO has 40 Plus Years Of Making Water Quality Instruments. Experience matters. Focus matters. Having been designing and making water quality instruments since 1973 means our customers benefit from our deep product, R&D and production know-how’s and a reputation built on efficiently delivering quality products. Jenco is a family owned water quality meter manufacturer that in 1973 launched the world's first digital portable pH meter. Our founder's pioneering spirit and the relentless focus on quality and value continue to inspire us to build the best next generation products - from the simplest testers to the most advanced, gesture-operated benchtop meters that can stream data over WIFI networks.