ISO 659:2009 specifies a reference method for the determination of the hexane extract (or light petroleum extract), called the “oil content”, of oilseeds used as industrial raw materials. The procedure for sunflower seed is different from those for other seeds as it includes an additional moisture content determination after the seed has been ground to prepare the test sample. The method has been tested on rapeseed, soya beans and sunflower seed. This does not, however, preclude its applicability to other commercial seeds. If required, the pure seeds and the impurities can be analysed separately. In the case of groundnuts, the pure seeds, the total fines, the non-oleaginous impurities and the oleaginous impurities can be analysed separately.
Tämän julkaisun valmistelusta Suomessa vastaa SFS Suomen Standardit, puh. 09 149 9331.
Sisällysluettelo
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagent
6 Apparatus
7 Sampling
8 Preparation of test sample
8.1 Reduction of laboratory sample
8.2 Predrying
8.3 Test sample
9 Procedure
9.1 General
9.2 Test portion
9.3 Determination
9.4 “Oil content” of impurities
10 Expression of results
10.1 Method of calculation
11 Precision
11.1 Interlaboratory test programme
11.2 Repeatability
11.3 Reproducibility
12 Test report
Annex A Results of interlaboratory tests on the determination of oil content (informative)
ISO 658:2002 Oilseeds -- Determination of content of impurities
ISO 664:2008 Oilseeds -- Reduction of laboratory sample to test sample
ISO 665:2000 Oilseeds -- Determination of moisture and volatile matter content
ISO 658:2002 Oilseeds -- Determination of content of impurities
ISO 664:2008 Oilseeds -- Reduction of laboratory sample to test sample
ISO 665:2000 Oilseeds -- Determination of moisture and volatile matter content