Turbidity Tube, 60 cm
Accurately measures water clarity. Features a clear polycarbonate tube with numeric centimeter scale on the side and a 4.5 cm standard secchi disc design in the bottom of tube. Secchi disc is screwed to a rubber stopper, which can be removed for easy cleaning. Drain hose with finger crimp allows sample to be drawn off until secchi pattern is visible. 60 or 120 cm in length.