Ulisem pH Meter Tester, Portable Digital pH Tester Pen 0-14 pH Measuring Range Water Quality Testing for Hydroponic Pools

Wide Application: The digital pH meter has many uses and is very suitable for testing the pH value of pure water, swimming pools, wine, hydroponics, etc. It can be used to test the pH balance in drinking water, aquariums, RO systems, spas, or hydroponic systems. Easy to Use: The pH tester can read very quickly and accurately, allowing you to easily assess the data. Turn on the switch, place the probe in the water to stir (ensure the small glass ball is fully submerged), and read the value once it stabilizes. Wide Measuring Range: The entire measuring range of this digital pH meter is from 0.0 to 14.0 pH, and various readings can be obtained. Basically, any environment that needs to test the pH value can use the tester to obtain accurate data. Automatic Temperature Compensation: You don't have to worry about the temperature of the liquid being measured. The pH meter has an automatic temperature compensation function; it will adjust automatically according to temperature changes. Mini pH Pen: The mini pH test pen is small and easy to carry, and can be used for testing anytime, with simple operation. The mini pH meter allows you to easily carry it in your pocket, so you can measure anytime, anywhere. Specification: Item Type: pH Meter Material: ABS Purpose: Testing pH value Power Supply: LR44 button cell Battery Type: Lithium battery 1-3: Highly acidic substance 4-6: Acidic substance 7: Neutral 8-11: Alkalinity 12-14: Extremely high alkalinity Package List: 1 x pH Testing Machine 2 x pH Reagent 1 x Slotted Screwdriver 1 x User Manual Note: The pH tester should be calibrated frequently, especially after long periods of non-use. pH Test Pen Calibration Method: 1. Rinse the calibration powder with 1. Place the pH electrode in 250 ml of distilled/purified water. Insert the pH electrode into the mixed phosphate standard buffer solution with a pH value of 6.86, gently shake it, and let it remain still for a moment until the value stabilizes. 2. Use the small screwdriver provided to access the small round hole behind the pH pen and turn it left and right to adjust the calibration potentiometer until the displayed value matches the displayed value of the standard solution at room temperature. 3. After cleaning the electrode with distilled water, as described above, insert the electrode into the potassium hydrogen phthalate standard buffer solution with a pH value of 4.01 for calibration. 4. Do not contaminate the standard buffer solution after cleaning and seal it with plastic wrap, which can be reused.