Conductivity Indicator with 10 Levels. The Conductivity Indicator can be used for quick comparisons of conductivity of solutions.

GSC International CNDTEST 10-level Conductivity Indicator for Quick Solution Comparisons 10-Level Display: Measures and shows solution conductivity through 10 clear LED indicators Quick and Simple Use: Submerge brass prongs, press button, and view immediate LED feedback Hands-On Learning Tool: Supports chemistry and physics instruction with real-time data Multi-Solution Testing: Works with water, vinegar, saltwater, baking soda, and more Ideal for Education: Designed for classroom demonstrations, science fairs, or homeschool labs ⚠️ Proposition 65 Warning for California Residents: WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm.  For more information, visit www.P65Warnings.ca.gov. Our products are not toys. Use in a laboratory or educational setting only. Not for children 15 and under.