For salt rejection tests, the only thing that matters is the initial conductivity and final conductivity. However, I am having a hard time figuring out how to properly conduct this test. Some researchers do every 10min, then 20min... but I think I can do it hourly since the change is not that much and you are only concerned about the final conductivity (i.e. the 24th hour).
Please share your insights and experiences.
Thank you!