Aflatoxin M1 in whole milk-powder reference materials.

The development of three full cream milk powder reference materials, certified for their aflatoxin M1 content, is briefly described. The materials were prepared and certified within the Reference Material Programme of the Community Bureau of Reference. The three reference materials RM's 282, 284 and 285 contain aflatoxin M1 at concentrations of: less than 0.05 microgram/kg, 0.31 +/- 0.06 microgram/kg, and 0.76 +/- 0.05 microgram/kg.