General Tools TDS503 Digital Pocket Electrical Conductivity Meter is designed for simple water quality testing with automatic temperature compensation. The General Tools TDS503 features an easy-to-read digital display, pocket friendly design, and an electrode capable of reaching up to 3.15".
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
