Thin layer chromatography of Isochrysis galbana Parke (927/1) total lipids. Eluant 1 (half plate starting from the bottom): methyl acetate / propan-2-ol/ chloroform / methanol / 0.25% aqueous KCl (25/25/25/10/9); eluant 2 (entire plate): hexane/diethyl ether/glacial acetic acid (80/20/2); visualization: α-naphtol solution; components were identified by comparison with standards analysed under the same conditions.