| The Combo has a large easy-to-read, dual-level LCD. pH and EC/TDS readings are automatically compensated for the effects of temperature (ATC).
 The Combo pH, EC/TDS tester brings you all the features you've asked for and more!
 
 
 
    
        
            | Measuring range | PH: 0.00¡«14.00 PH EC: 0~19.99ms/cm
 0¡«1999us/cm
 TDS: 10¡«19990ppm
 |  
            | Resolution | PH£º0.01PHEC: 0.01ms/cm
 1us/cm
 TDS£º10 ppm
 |  
            | Accuracy | PH£º±0.1 PHEC¡¢TDS£º±2%F.S
 |  
            | Automatic Temperature Compensation | 0¡æ¡«50¡æ |  
            | Operating Temperature | 0¡æ¡«50¡æ |  
            | Power Supply | DC 6V(include), with adaptor |  
            | Dimensions | 110mm×96mm×22mm |  |