PHS-98107 tester family Pen PH meter

Specification:

Range:0.00-14.00pH   

Resolution:0.1pH

Accuracy +/-0.1PH or 0.05pH    

 Power:4*1.5V

Calibration: manual, 2 points 

Dimension:175 x 41 x23mm

 N.W:90g    G.W: 130g

 Package: 100pcs/carton, 14kg/carton

 

Operation:

Remove the protective cap. Don't be worry if white crystals appear around the probe head. This is normal with pH electrodes and they dissolve when rinsed with water.
Turn the meter on by sliding switch on the top.
 Immerse into solution up to the max immersion level.
Stir gently and wait until the display stabilizes.
After use, switch off pH meter, use the water clean the electrode and replace the protective cap.
 Large fluctuations in readings could be due to lack of calibration, dry electrode or rundown batteries.