<p>Features:</p> <p>Easy to Use: Simply immerse the pH meter electrode in the solution to be tested, readings are quickly display on a large lcd display</p> <p>Wide Application: Ideal instrument for any aquarium, the fishing industry, swimming pools, spa, school laboratories, food \u0026 beverage, drinking water etc.</p> <p>Auto Calibrated:Features in-built calibration with 2 buffer powders.Just press a button to finish the calibration. This pH meter is factory calibrated. Users can use it directly.</p> <p>Fast and Accurate Results: No need to work with those annoying color charts and test strips. Resolution: 0.01 pH, Accuracy: 0.01 pH</p> <p>Compact Portable Design: Pocket fitting pH meter that's also lightweight and compact. Total concealed fit in your bag or pocket for easy, casual carrying.</p> <p>Specification:</p> <p>Display: LCD Digital</p> <p>Accuracy: 0.01</p> <p>Resolution: 0.01</p> <p>Operating Temperature: 0~60C</p> <p>Measuring Range: 0.00~14.00</p> <p>Probe Type: Precision glass bulb electrode</p> <p>Power Supply: 2*1.5V LR44 Batteries(Not included</p> <p>)</p> <p>illustrate:</p> <p>Step 1.Remove protective cap.</p> <p>Step 2.First rinse the electrode with distilled water and suck it with filter paper.</p> <p>Step 3. Turn the meter on by pressing ON\/OFF key.</p> <p>Step 4. Immerse the pH meter electrode in the solution to be tested (should not be over the immersion line).</p> <p>Step 5.Stir gently and wait around 30 seconds till the reading stabilizes.</p> <p>Step 6.After finishing, clear the electrode with pure water, turn the meter off by pressing ON\/OFF key.</p> <p>Step 7.Always replace the protective cap after use.</p> <p>Instructions:</p> <p>1.Turn on PH meter</p> <p>2.Disolve each buffer solution in 250ML of distilled water</p> <p>3.Immerse the electrode into the PH 6.86 solution,(under the temperature of 25)</p> <p>4.Press the CAL(calibration)button for 5 seconds and release</p> <p>-Display will start flashing 6.86</p> <p>-Wait until the display stops flashing.</p> <p>Rinse the electrode with distilled water and dry it with filter paper.</p> <p>5. Immerse the electrode in PH 4.00 solution,</p> <p>-Press \</p>