The following are available in the HaloSense range; - Online free chlorine 0.005-2ppm, 0.05-5ppm, 0.05-10ppm, 0.05-20ppm, 0.5-200ppm - Online total chlorine 0.005-0.5ppm, 0.005-2ppm, 0.05-5ppm, 0.05-10ppm, 0.05-20ppm - Online residual chlorine in seawater analysers (free or total bromine) 0.005-2ppm, 0.05-5ppm, 0.05-10ppm, 0.05-20ppm - Online zero chlorine (designed to measure the absence of free chlorine) 0.005-2ppm for applications such as post activated carbon and pre-RO monitoring.