【High Pre1cision Measurement】This pH buffer calibration solution is specifically designed for pH measurement. With a precise measurement of 88 mScm, it en1sures reliable and consistent results without any deviation. 【Comprehensive Calibration Solution】Not only does it calibrate pH levels, but it also effectively works for salinity calibration. It provides a comprehensive solution for all your testing needs, making it highly and practical. 【Convenient 25ml Capacity】Each bottle of this calibration solution comes with a convenient 25ml capacity, allowing for multiple calibrations. With ample supply, you can perform calibrations multiple times without worrying about running out of solution. 【Easy to Use】With its simple and user-friendly design, this calibration solution can be easily used by both professionals and beginners. Just follow the instructions provided, and you can achieve accurate measurements effortlessly. 【High Performance and Reliability】Our pH buffer calibration solution undergoes strict control measures to en1sure its accuracy and reliability. You can trust that it will consistently deliver precise results, making it a dependable choice for your pH measurement needs.