?Note?: This product doesn't contain calibration powder. It contains 1PH Meter & 1TDS Meter. The PH Meter & TDS Meter is calibrated before leaving the factory. Both products need to be calibrated again after a period of use (this is a normal phenomenon). For PH, you need to purchase calibration powder yourself for calibration, while TDS needs to be calibrated in salt water.
?Product calibration steps?: please read it in the product description.
?The PH & TDS Meter function?? ?PH measure range:0~14PH, Accuracy : ±0.01 PH. The PH meter can tell you the acid-basic value. PH have the function of Automatic Temperature Compensation. ?TDS:0~9990 ppm, Accuracy:±2%. 3 in 1 TDS meter can measure TDS, EC and Liquid Temperature in Fahrenheit or Degree Celsius. TDS is for testing the quality of water purifier with BACKLIGHT FUNCTION, convenience for you to read.
Wide Application?:The ph and TDS meter can test the hardness and pH of water, which can effectively ensure the quality and health of water. They are suitable for multiple occasions, such as drinking water, aquariums, hydroponics, spas, swimming pools and other water systems.
?Excellent and timely service??The PH&TDS Meter has a one-year warranty service. If you have any questions about the product, you can contact us at any time, we will solve it for you within 12 hours.