Measure the transparency of a shallow or flowing body of water using the Carolina™ Turbidity Tube. This clear, 120-cm tube features a side scale with both centimeter and Nephelometric Turbidity Unit (NTU) markings, plus a 45-mm secchi-disk design at the bottom of the tube. Water level within the tube is easily controlled using the drain tube and clamp at the base. Ideal for use with The GLOBE Program®.
