1.The powder needs to be poured into the target container completely. In order to avoid error, it’s better to wash the bag by water.
2.The conductivity of water should be controlled within 2us/cm. Generally, distilled water or ultra pure water is used.
3.250ml refers to water volume at 25°C. When making buffer solution, the user should keep the containers clean to prolong the storage time and to avoid bacterial contamination.