Yieryi High Precision LCD electrical ph meters water PH Pen Digital PH Tester Aquarium

Specifications

Features:

• 100% brand new and high quality
• Calibration Method: 2 points automatic calibration
• Probe Type: Precision glass bulb electrode
• Display: LCD Digital

Packing List:

• 1*PH Tester With The Retail Box
• 2*PH Powder

PH acidity meter calibration powder instructions:

• PH pH standard liquid preparation powder, 4.01, 6.86, two specifications,
• 250ML standard liquid can be prepared for each package. (be sure to change the water according to the required proportion, otherwise it will affect the accuracy of the calibration and make the error increase)​

Operation procedure:

• 1. Remove the protective sleeve.
• 2. Clean the pH electrode with distilled water first. Then dry the electrode with filter paper.
• 3. Switch on the battery compartment.
• 4. Insert the pH meter into the liquid to be measured until the liquid is immersed in the immersion line. The condition allows the solution to dip slightly above the immersion line.
• 5, gently stirring the solution and wait for two minutes or so. Read the display value.
• 6. After use, clean the electrode. Switch off. Cover with protective cover.
• Calibrator: pH standard solid substance. Open the bag, add water can be used. Suitable for calibration of any type of acidity meter. Two various specifications for pH=4.00; 6.86 and valid for five years.