ISO 665-2020 pdf download

ISO 665-2020 pdf download.Oilseeds – Determination of moisture and volatile matter content. 5.4 Flat-bottomed vessel, either of metal or gtass, at the discretion of the analyst. If metal Is used. it shall be resistant to attack under the test conditions, The vessel shall be provided with a well-fitting lid and shall allow the test portion to be spread to about 0,2 g/cm2 (e.g. a vessel of diameter 70mm and height 30mm to 40mm). Glass vessels with ground closures may also be used. 5.5 Electric oven, with thermostatic control and good natural ventibtion, capable of being regulated so that the temperature el the air and of the shelves in the neighbourhood of the test portions lies between 101 C and 105 C In normal operation. 5.6 DesIccator, containing an efficient desiccant such as phosphorus(V) oxide, silica gel. ctwated alumina. etc.. and provided wnh a ceramic plate that allows vessels (5.4) to cool rapidly. 6 Sampling Sampling is not part at the method specified in this documeni A recommended sampling method is given in ISO 21294111. It is important that the laboratory receive a sample that is truly representative and has not been damaged or changed during transport and store. 7 PreparatIon of test sample 7.1 Prepare the test sample by reducing the laboratory sample in accordance with ISO 664. II large non-oleaginous foreign bodies have been separated before the reduction of the laboratory sample, make allowance for this in the cakubtion (see 22). According to the requirements at the contract, lake a iample as received or after separation of the Impurities, 7.2 In the case of copra. grate the product by hand or, preferably. use a mechanical grater (5,3) that allows the whole sample to be treated. When grating by hand, which does not allow all the analysis sample to be grated, endeavour to obtain a test sample that is as representative as possible and, to this end, take account of the size and colour of dilTcri’nt fragmenta. The length of the particles after grating may exceed 2 mm but shall not be greater than S mm. Mix the particles carefully and carry out the determination without delay. 7.3 In the case of seeds of medium size (groundnut. etcj. except for safflower seed. sunflower seed. soya beans and cottonseed with adherent haters, grind 11w test sample in the nseclsanical mill (12), which has previously been well cleaned, until the major dimension...