Secchi Disc; Determine how clear the water is.

Real equipment as used by the professionals. 200mm Disc four quadrants 2 black, 2 white, with plenty of line lower into water.

Our sturdy plastic Secchi disk handily meets industry standards. It is 200 mm in diameter (7-7/8”) and has four quadrants, two white and two black. We include 20 meters of 1/8” diameter line on an orange styrofoam form that will float if dropped in the water. Plus instructions that are written at a basic level.

Brand : Serrata