NF ISO 3733

Petroleum products and bituminous materials - Determination of water - Distillation method

This International Standard specifies a method for determination of water up to 25 % in petroleum products,

bitumens, tars and products derived from these materials, excluding emulsions, by the distillation method. The

specific products considered during the development of this test method are listed in Table 3.

This International Standard may be used to determine water content in excess of 25 %. However, no precision data

has been determined at levels greater than 25 %. Volatile water-soluble material, if present, is measured as water.

NOTE 1 A knowledge of the water content of petroleum products is important in the refining, purchase, sale and transfer of

products.

NOTE 2 The amount of water determined by this method can be used to correct the volume involved in the custody transfer

of product.

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