ISO 15267 pdf download

ISO 15267 pdf download.Animal and vegetable fats and oils — Flashpoint limit test using Pensky-Martens closed cup flash tester 1 Scope This International Standard specifies a method to determine whether a sample of oil or fat at a given temperature will flash when a test flame is applied to the sample under specified conditions. It is applicable to animal, vegetable and marine fats and oils. The fats and oils may or may not contain small amounts of volatile inflammable solvents. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 661 :1 989, Animal and vegetable fats and oils — Preparation of test sample . ISO 271 9:1 988, Petroleum products and lubricants — Determination of flash point — Pensky-Martens closed cup method. 3 Principle The sample is heated at a slow constant rate with continual stirring. Once the temperature specified is stabilized, a small flame is directed into the cup. The sample is deemed to have flashed when a large flame appears and instantaneously propagates itself over the surface of the sample; a halo should be ignored. 4 Apparatus 4.1 Pensky-Martens closed cup flash tester For details, see ISO 271 9. 4.2 Thermometers, having a range from 1 0 ° C to 200 ° C. Alternatively, an IP thermometer 1 01 C (having a range from 20 ° C to 1 50 ° C) can be used. 4.3 Laboratory centrifuge (swing type), of sufficient size to hold stoppered 1 20 ml centrifuge tubes. 4.4 Centrifuge tubes, of 1 20 ml capacity, with stoppers. 5 Reagents Use only reagents of recognized analytical grade, and distilled or demineralized water or water of equivalent purity. 5.1 Sodium sulfate, anhydrous. 6 Sampling Sampling is not part of the method specified in this International Standard. A recommended sampling method is given in ISO 5555 1 ) . (See also 8.1 .) It is important that the laboratory receive a sample which is truly representative and has not been damaged or changed during transportation, sampling and storage. Samples shall be...