ion-exclusion resin for chromatography R with a capacity of about 27
meq/column.

Determine the concentration of acetate in the test solution using the calibration curve

generated by the average of the readings obtained with the reference solutions. Measure the

peak area for acetate. Calculate the percentage content of acetate using the following

expression:
2.6c/m
c = concentration of acetate in the test solution, in micrograms per millilitre, determined

by linear interpolation of the standard curve for reference solution (b),

m = mass of sample, in milligrams.