Stir, and transfer the contents of the beakers to separate columns or funnels (5.1.4) each containing about 1 g silica gel (4.4) ; elute the methyl esters using three or four 10 ml portions of diethyl ether.
Roer en breng de inhoud van de bekerglazen separaat over in de kolommen of filters (5.1.4) die ongeveer 1 g silicagel (4.4) bevatten en extraheer de esters met drie of vier porties diëthylether van 10 ml.