BS EN 15691:2009 pdf free.Ethanol as a blending component for petrol Determination of total dry residue (involatile material) Gravimetric method.
BS EN 15691 This European Standard specifies a procedure for the determination of dry residue in ethano’ by gravimetnc (desiccation) method in the range (10 to 25) mg/100 ml.
NOTE In an interlaboratory study [2J the method descnbed has been tested at levels down to 3,5 mg)100 ml, but the precision appeared to be insufficient at such low levels.
WARNING — Use of this document may involve hazardous equipment, materials and operations. This method does not purport to address to all of the safety problems associated with its use, but it is the responsibility of the user to search and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 3170, Petroleum liquids — Manual sampling (ISO 3170:2004)
Dry residue is determined by the weighing of the residue left by evaporation of alcohol on a boiling water bath and drying in a drying oven.
Dry residue includes all matter that is non-volatile under specified physical conditions.NOTE The interlaboratory testing and the statistical evaluation are detailed in [2]. In some occasions the repeatability is larger than the reproducibility, caused by outliers, but the evaluation did not show major mistakes in the set up of the interlaboratory testing.
The term “single test result” means the value obtained when the standardized test method is applied fully once to a single sample. Unless otherwise stated, the probability shall be 95 %.
The test report shall contain at least the fllowing information:
a) reference to this European Standard, i.e. EN 15691;
b) all information necessary for the complete identification of the sample;
c) applied sampling procedure (see 5.1);
d) results of the test (see 8). BS EN 15691 pdf download.