The 3 in 1 water quality monitor is professional and useful tool for testing pH / ORP !#!amp!*! TEMP of solution level. Perfect for wide applications， such as beverage， fish hatcheries， food processing， aquarium， photography， laboratory， quality control， school !#!amp!*! colleges， swimming pools， water conditions. 

Features: 
Apply in water sources， aquarium， hydroponics， spas， swimming pools and other water systems. 
Automatic temperature compensation. 
Use to measure the pH / ORP !#!amp!*! TEMP of solution. 
Easy calibration of pH and ORP with just a mini-screwdriver. 
Can online monitor for a long time. 
Large and clear LCD with backlight， easy to read and accurately measuring functions. 
Separate pH， ORP and TEMP electrode， ATC function. 

Specifications: 
Temperature Unit: ℃ / ℉ (Optional) 
Range: pH: 0.00 ～ 14.00pH 
     ORP: 0 〜 ±1999MV 
     Temperature: -50℃ ～ 70℃ (-58℉～ 158℉) 
Resolution: pH: 0.01pH 
        ORP: 1MV   
        Temperature: 0.1℃ (0.2℉) 
Accuracy: pH: ±0.1pH     
       ORP: ±5MV 
       Temperature: ±1℃ (±2℉) 
Temperature Compensation: 0℃ ～ 50℃ (32℉～ 122℉) 
Working temperature: 0℃ ～ 50℃ (32℉ ～ 122℉)  
Length of ORP/pH Electrode Line: Approx. 118cm / 46.5in