The pen pH meter is professional and perfect tool for testing pH of your water level. Suitable for aquarium pool and environment water. 

Features: 
Use to measure the pH level of solution. 
Waterproof IP65 and ATC function. 
Apply in water sources， aquarium， hydroponics， spas， swimming pools and other water systems. 
Very wide variety of applications， used for testing the acidity and alkaline levels of almost any liquid. 
Compact light and portable pen-type design. 
Easy to use and provides instant display of results. 
CE， FCC and RoHS certificated to offer safer and precise measurement. 

Specifications: 
Range: 0.00 ～ 14.00pH 
Resolution: 0.01pH 
Accuracy: ±0.1pH 
Operating Temperature: 0℃ ～ 50℃ (32°F ～ 122°F) 
Temperature Compensation: 0°C ～ 50°C (32°F ～ 122°F) 
Battery: 4×1.5V (AG-13) Button Cell Battery (NOT Included) 
Color: Yellow 
Material: ABS 
Item Size: Approx. 15.3 * 3.1 * 2cm / 6.0 * 1.2 * 0.8in 
Item Weight: Approx. 51.6g / 1.8oz 
Package Size: Approx. 18 * 7 * 3cm / 7.1 * 2.8 * 1.2in 
Package Weight: Approx. 107.4g / 3.8oz 

Package List: 
1 * pH Meter (Battery is not included) 
1 * User Manual 
1 * Mini Screwdriver