TOPWAY Digital PH and TDS Meter Combo, 3 in 1 TDS PH Temp Tester Meter, High Accuracy LCD Backlight Digital Water Quality Test Meter for Drinking Water/Aquarium/Swimming Pool and More

• This set combo of pH, TDS meter which could help you to test both of the pH value and water quality in only 5 seconds.
• Measuring range of pH meter is 0.00-14.00pH, accuracy: +/-0.01pH and TDS testing range is 0-9999ppm, accuracy: ±2% F.S.
• With automatic calibration function, three points automatic calibration(only 6.86 point calibration: the accuracy is 0.1ph). No need any adjustment before use, convenient and professional.
• Desinged with LCD backlight which makes the data display clearer than other non-light meter, even in dark situation.
• Suitable for testing pH balance value and water quality of drinking water, aquariums, pool, spa and other water system, help you to protect the water safety of your daily life.

Product description Specifiations: Get 2 meters in one buy with the cost of 1 meter. High quality and durable material. PH meter measuring range: 0.00-14.00pH, Accuracy: +/-0.01pH TDS testing range: 0-9999ppm, Accuracy: ±2% F.S. Upgraded fucntions in calibration. Compact design for indoor & outdoor use. The calibration process of pH meter: 1. Dissolve the 3 packs of pH powder (pH 6.86, pH 4 and pH 9.18) into 250ml water and stir it until all the powder dissolved. 2. Choose the solution of pH 6.86 first. 3. Immerse meter into the pH 6.86 solution and then press ‘CAL’ button for 5 seconds. After the screen flashing 3 times at the reading of 6.86, get the meter out from the solution. 4. Clean the meter with water, and choose pH 4 solution to repeat step 3. After that, choose pH 9.18 solution to repeat step 3. Directions Immerse meter into the pH 6.86 solution and then press ‘CAL’ button for 5 seconds. Repeat this process with pH 4 and pH 9.18 solutions.