Use this pH pen meter to test ranges from -2pH to 16pH. This meter works in temperatures ranging from -5C to 60C; it is waterproof; and battery life is 200 hours of continious use.
Become a SciStarter Ambassador!
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Applications for Cohort 4 are open!

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 March 14th to join the movement!