| − | The ester value is the number of mg of potassium hydroxide required to saponify the esters in 1.0 g of the substance. [2] | + | The ester value is the number of mg of potassium hydroxide required to saponify the esters in 1.0 g of the substance. <ref>Pharmacopedia/National Formulary. US., Vol. 1, 2009, p. 150</ref> |