About This Package Contents: 1*250ml pH4.00 calibration solution; 1*250ml pH7.00 calibration solution;1*250ml pH10.01calibration solution; 3*30ml transparent measuring cups with scale pH4.00, 7.00 and 10.01 Calibration Solution: Large-capacity packaging, suitable for use with all pH meters. The package is equipped with a transparent measuring cup with scale, so that users can accurately grasp the amount of calibration solution (20ml) and better distinguish colors during use, avoiding unnecessary waste and greatly reducing the cost of maintaining the tester. The accuracy of the pH tester calibration solution is up to ±0.02 pH Calibration Method: For EZTOCH pH Tester, please follow the steps below: Place the pH probe in the 7.00 calibration solution, press and hold the CAL button for 5 seconds, then release the button and wait for 7.0 to flash 3 times, complete the pH 7.0 calibration. The steps for pH4.0 and pH10.0 are the same as those for pH7.0 (Please refer to the manual for the calibration steps of other brands of pH meters) Easy to Use: Ready to use after opening the lid, without the tedious dissolution process, which improves the efficiency of maintaining the tester. EZTOCH pH calibration buffer is not only suitable for all brands of pH testers, but also for all pH pens and pH meters, making it the first choice for various calibration needs Note: EZTOCH pH tester calibration solution for water is valid for 2 years. It can be reused after opening and sealed and stored at low temperature. The used pH buffer calibration solution cannot be poured back into the bottle to avoid contamination. Please note: Do not swallow the liquid in the bottle and keep away from children
