LAUSR

Abstract This study developed a Microsoft Excel based spreadsheet which acted as a template for researchers to construct sorption equilibrium isotherms and apply equilibrium non-linear models to the experimental data. The spreadsheet also incorporated uncertainty estimators, such as standard error and 95% confidence intervals (CI), as well as goodness-of-fit metrics, such as R2 and F-test. Insights into the effects of isotherm experimental design and repeats were discussed. The 95% CI metric applied was an acceptable metric for the uncertainty associated with the loading capacity, qmax. The F-test was demonstrated to be an appropriate goodness-of-fit metric, which assessed the probability that the variance of the model and experimental data was the same. The importance of appropriate equipment selection and experimental design with respect to isotherm interpretation was highlighted. The spreadsheet was made available for the benefit of all researchers to use.