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A turbidity tube is used to measure clarity of water. This model is 120 cm. tall and includes a 4.5 cm standard secchi disk at the bottom. Water can be drained from the tube via a drain hose until the secchi disk is visible.
Become a SciStarter Ambassador!
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Applications to join the final cohort in this inaugural class of SciStarter Ambassadors due May 2nd

Libraries and community organizations need your help to spark excitement for citizen science and keep the momentum going!

The SciStarter Ambassador Program offers FREE training to volunteers ready to make an impact in their communities.

Ready to make a difference? Complete your application by May 2nd to join the movement!