PH Meter for Water Hydroponics Digital PH Tester Pen 0.01 High Accuracy Pocket Size with 0-14 PH Measurement Range for Household Drinking, Pool and Aquarium (Blue)

How to use:

1. Take off the pen cover and clean the electrode with pure water
   
   
2. Put the pen probe into the solution, taking care not to exceed the water level
   
   
3. Turn on the switch, stir gently, and wait for the reading to stabilize
   
   
4. After the reading is stable, read the displayed value
   
   
5. After the test, clean the electrode with pure water, dry the water on the pen tip in time, and cover the pen cover back
   
   

Standard configuration：

• 1XPH meter
  
  
• 3X calibration powder
  
  
• 1X gift box
  
  
• 1X instruction manual
  
  

Precautions:

Please note that the PH pen probe is a glass product and is a fragile product. Please do not collide with things. Once the damage is not replaceable, you must protect the probe. After use, use absorbent paper to gently absorb the water on the probe.

Instructions for use of PH calibration powder:

Calibration powder:pH standard solid substance. It can be used after adding water. Suitable for calibrating any type of ph meter. Each package needs to prepare 250ML of purified water.

(Note that the configured water must be purified water or distilled water. Tap water and mineral water cannot be used to configure the calibration solution.

The water must be added in the required proportion, otherwise it will affect the accuracy of the calibration and increase the error)

• The configured calibrators shall be sealed with clean bottles and stored in a cool place away from light.
  
  
• The shelf life of the calibration powder is 2 years, and the shelf life of the calibration solution after configuration is 6 months