This International Standard specifies a method for the Iaboratory determination of water and Sediment in crude oils by means of a centrifuge procedure. The precision data have only been determined for water contents up to 1 % (V/v). NOTE 1 lt has been obset-ved that centrifugal methods of determination of watet- and Sediment may, in many cases, give erroneous results. This is especially so when use of a high-speed mixer has been employed to obtain a representative Sample. The method is therefore not entirely satisfactory and the amount of water determined is almost always lower than the actual water content.