Pooltester Phosphate Test Kit, in plastic case, Phosphate 0-1000 ppb

Does your pool have an algae problem? Algae growth is often a result of phosphate in the pool water. In order to combat the issue, a phosphate binding material can be added to the water, combined with a routine practice of monitoring phosphate levels in the pool. It is important that the solution you choose can accurately detect the low concentration of  
200 µg/l PO₄, the level at which an algae bloom can occur. 

The Lovibond^® Phosphate test kit is up to the task!