Figure 3: Calibration curves for phosphite and nitrate in normal and Cl-removal set-ups with the IC conductivity detector. A and B: Calibration for phosphite and nitrate in normal set-up. C and D: Calibration for phosphite and nitrate in Cl-removal set-up. Correlation coefficients (r2) values are > 0.999 for all cases suggesting no disruption of other peaks by Cl removal.