This product has been discontinued by the manufacturer. Please contact us for the closest replacement - EPA compliant turbidity and free/total chlorine meter with Fast Tracker™ technology; Range 0.00 to 9.99; 10.0 to 99.9 and 100 to 1000 NTU, Free Cl? 0.00 to 5.00 mg/L; Total Cl? 0.00 to 5.00 mg/L; 115V