Animal and vegetable fats and oils. Determination of fatty-acid-bound chloropropanediols (MCPDs) and glycidol by GC/MS. Part 3. Method using acid transesterification and measurement for 2-MCPD, 3-MCPD and glycidol
State system for ensuring the uniformity of measurements. State verification schedule for instruments measuring volume densities of ionized air electric charge and air ion number concentration