This is a more general question and I hope you understand it: A fraction (vol) from a liquid/liquid extraction process, the analytes concentration in mass/volume must be evaluated. What sample amount must be entered in sequence table, if I dont know e.g. the dried matter content. Must there be a amount filled in?

Hello chschaef1

The sample amount column is used in mass% calculations where the result of calculating the amount of sample by reference to the calibration curve, multipliers and dilution factors is divided by the sample amount then multiplied by 100.

So, in your case, I assume that you're not doing this calculation, so you can leave the sample amount column with zero values.

Hope that helps.

/Andy