PH Pen Tester,THZY High Accuracy Pocket Size PH Meter with ATC (Automatic Temperature Compensation) Backlit Light LCD 0-14 pH Measurement Range, 0.01 Resolution Handheld pH Pen Tester

What should I look for if I need to purchase a pH meter
If you are required to check any liquid pH with a meter, you need to consider the accuracy. Accuracy is listed as a range of +0.XX pH units. This means that the meter may read so many pH units above or below the actual pH of the product. Purchase a pH meter with an accuracy of +0.02 units or better. For instance, a pH meter with an accuracy of +0.01 is a good choice, better than that of +0.05 or +0.1.

This THZY PH tester is the perfect device for determining the acidity or alkalinity of liquids. Each unit comes with a carrying case and small screwdriver for precise calibration; furthermore, It is easy to use - simply remove the protective cap and immerse the electrode in the solution to be measured. Included with the meter are 6.86 and 4.01 pH buffers for an initial calibration - Instructions for calibration are also included with this product.

Specification:
Measuring range: 1-14 pH 
Resolution: 0.01 PH 
Batteries: 4x 1.5V LR44 button cell (AG13) 
Adjustment: trimmer potentiometer 
Automatic temperature compensation: 0-50¡¦(32-122¨H) 
Dimensions: 5.94" x 1.3" x 0.79" 
Weight: 0.12lb

Package list:
1 x PH Meter 
1 x Carrying case 
1 x Adjustment screwdriver 
2 x Calibration packets 
1 x User's manual