Description
OPTIMAL CHOICE: Our pH 4 and 10 buffer solution combo is essential for measuring the pH level of any substance with a meter and electrode. These professionally made pH buffers are stable and resistant to change, so you can obtain accurate results every time..READY TO USE LIQUIDS: Our pH 4 and 10 calibration solutions are ready to use and do not require dilution..PREMIUM PACKAGING: The products come in heavy-duty gallon containers. No need to worry about leakage during shipping. Each gallon will have a lot number and expiration date..QUALITY STANDARD: All of our pH buffers are traceable to NIST (National Institute of Standards and Technology, USA).UNIVERSAL SOLUTION: These pH calibration solutions can be used with most pH meters. pH 4 is color coded red. And pH 10 is color coded blue.