Abstract
A three factor central composite design was used to study the effect of methanol, propanol and amyl alcohol on the paper chromatographic separation of arginine, histidine, leucine, threonine and tryptophan. Statistical analysis of the Rf data yields second order equations which describe the response surface of Rf as a function of the composition of the 3 alcohols. This data is useful in understanding the relative influence of each alcohol and in predicting Rf values for different solvent combinations.