Struvite - Urine Stone

Struvite, with the chemical formula (NH4)MgPO4.6H2O, is a soluble compound in water that forms crystals when precipitating. It is also known as urine stone and can accumulate in plumbing systems, particularly in urinals and sewage treatment pipes, where it creates hard deposits that are difficult to remove. The substance can be particularly problematic in wastewater treatment facilities where struvite is regularly clogging the pipe at the end of the separation process. Additionally, approximately 10% of kidney stones contain struvite. Merus rings are reported to increase the solubility of struvite and urine stone by slowing or stopping new struvite formation in both industrial and residential water systems.