Secchi Disc, white, version S

Secchi disc with a diameter of 200 mm for determining the depth of visibility and light permeability of water (called also as transparency of water and light penetration). It is made of durable, white plastic 10 mm thick, additionally equipped with a cylinder-shaped stainless steel weight (50 mm diameter) for better lowering and a high rod ended with a stainless steel eyelet to hook the line (line to be purchased separately). The disk is made of white, sturdy plastic and stainless steel. Overall dimensions: diameter 20 cm; height 23 cm.