INFINITY-CLW is a chlorophyll and turbidity meter for a long term observation with a wiper that cleaned the dirt on the optical sensor. It adopts LED in the chlorophyll and the turbidity sensor luminescence part as a source of light. So, they change little in a long term use.
Especially, because the stability in the low density level is good, and the correlation is high with SS in a high density level, the turbidity sensor is suitable for an investigation not only in the sea area but also in the dam and the river.