Lianhua Technology knows the importance of measuring and evaluating residual chlorine in different kinds of water samples. For years, we have offered the most reliable and efficient devices in the market… and we still do! Since 1982, when our founder, Mr. Ji Guoliang, developed the rapid digestion spectrophotometric method, we have maintained a 10 minute digestion and 20 minute output spectrophotometric digestion time when a client opts for any of our devices. Commitment goes a long way in the professional world and in designing the O2 Charger and the Digital Chlorine Analyzer, we have gone the extra mile in showing the world our dedication.