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Ever Needed an Accurate and convenient pH Meter? If you ever needed an portable pH meter that can be carried anywhere, this is it. Covers the full 0-14 pH range and an accuracy reading of ± 0.01. In addition, it contains Automatic Temperature Compensation. This pen type pH tester is an ideal solution for people regularly needed to test the pH values of various liquids such as food, water in the aquarium, pool, etc. Specifications: ✔ Measure Range : 0.00 - 14.00 pH ✔ Resolution : 0.01 pH ✔ Accuracy : ± 0.01 pH ✔ Automatic Temperature Compensation : 0 - 60 ℃ / 32 - 140 ℉ ✔ Calibration : Two Points Automatic Calibration Button ✔ Button battery: 2 x 1.5V LR44 ✔ Warranty : 1 Year How to Calibrate: STEP 1: Turn on the electronic pH meter, clean the electrode in distill water STEP 2: Immerse the electrode in pH 6.86 standard buffer solution(250ML) STEP 3: Press the "CAL" button for 3 seconds and release, wait until the display digital is 6.86pH and steady STEP 4: Clean the electrode in distill water, immerse the electrode in pH 4.00 standard buffer solution (250ML)STEP 5: Press the "CAL" button for 3 seconds, then press one more time for 1 second, wait until the display digital is 4.00pH. Then complete pH 4.00 calibration STEP 6: Clean electrode and dry it. Package Includes: ✔1 x pH Meter ✔6 x Calibration Buffer Powder ✔1 x Carrying case ✔1 x User manual ✔An Alkaline Food Chart(PDF version) will be emailed after purchaseDon't Miss Out On This Excellent pH Tester, Click "Add to Cart" Now!