The TL;DR version
Is there a fast way to determine what the cell environment of a particular cell (E.g RBC) is? (in terms of solute/ionic concentration)
I'm not sure if the question belongs here, but hear me out. I was doing revision and I kept coming across the line "put the cell in a solution which has the same solute/ionic concentration to prevent the cell from bursting or shrinking"
I get that concept, basically it's sort of replicating the internal environment of the cell with the buffer/solution so that the cell feels "at home."
Then my question is, how does one go about finding out how much exactly for each cell? I would think different cells have different internal environments and I don't believe that scientists actually just have stock solutions of buffers ranging from 0.00001M to 100M and trying every single solution until they find the perfect concentration.