应该没有英文版的，测试方法 意大利法规Decreto Ministeriale del 21/03/1973里面有简单的描述：
Performing the test The liquid coming from the release tests (distilled water, aqueous solution of acetic acid at 3%, oil sunflower, aqueous solution of ethanol), is submitted to spectrophotometric between 400 and 750 nm, assuming the same solvent as a reference not subjected to the sale. The liquid should occur entirely clear. In case of turbidity, it is filtered on paper. Spectrophotometric analysis is carried out for aqueous solutions, ethanolic acetic and, on cells of 10 cm of optical path, for the oil of Sunflower on cells of 1 cm optical path. In the range of wavelength indicated, the optical transmission must be not less than 95% compared to the baseline.
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