Ultrameter II 6PFCE: Conductivity, TDS, Resistivity, pH, ORP, Free Chlorine 

Great Product, One of the Best!    
Reviewer: Env. Tech, Academic/Professional Researcher from California     
I use this handheld (meter) many times each day. We have at least 3 on site at all times for regulatory purposes. I get accurate readings all the time in many types of water. I have tried several other handhelds because of a cheaper price, but none lasted more than a few months in these harsh conditions. I use these for Groundwater, Title 27 Ponds, wastewaters, fresh water, concentrated waters, and prodcut waters. I can use this one handheld for all of my monitoring.