This International Standard specifies a method for the assessment of the persistence of a flame applied to the edge of a wick of non-flammable material immersed in fire-resistant fluid. The test relates to the bulk behaviour of a fluid, which may provide pertinent information for safe transportation and storage. This standard is one of two basic measures of fire-resistance, and may be called up in regulations governing their use under the Luxembourg Report. This International Standard does not apply to certain water-containing fluids or emulsions that do not adhere to the board.