ISO 605:1991 pdf download.Pulses一Determination of impurities, size,foreign odours, insects, and species and variety一Test methods
1 Scope
This International Standard specifies methods not given in other International Standards for testing pulses which have not been processed and which are intended for human consumption or for animal feeding stuffs.
2 Normative reference
The following standard contains provisions which,through reference in this text, constitute provisions of this International Standard. At the time of publi-cation, the edition indicated was valid. All standards are subject to revision, and partics to agreements based on this International Standard are encour-aged to investigate the possibility of applying the most recent edition of the standard indicated below.Members of IEC and ISO maintain registers of cur-rently valid International Standards.
ISO 951:1979. Pulses in bags一Sampling.
7.1.1 Carry out the examination described in 7.1.2 or 7.1.3 (a rapid sensitive method) as soon as poss-ible after sampling
7.1.2 Spread out the sample and smell it. If no strong foreign odour is detected, return the sample to the container and seal it, leave it for 24 h and then re-examine the sample.
The sample may be further examined during or affter grinding .
If, after these operations, no foreign odour can be detected with certainty, put about 3 g to 5g of the ground sample into a flask of 50 mI to 100 ml ca-pacity. Examine the ground sample heated to a temperature not higher than 60 ‘C by cautiously moving the open flask over a flame or repeatedly shaking it and immersing it in a water-bath.
7.1.3 Put a small quantity of the ground or un-ground product in a beaker, pour in some warm water (60。C to 70 °C) and cover the beaker. After 2 min to 3 min decant the water. and note whetherforeign odours are present.
Spread out part of the laboratory sample on a warm plate (about 40 °C) and cover immediately with a bell jar in order to prevent the escape of insects.
NOTE 2
In warm climates it may be advisable to cool the sample and then to sieve it quickly using a sieve of aperture size appropriate to the sample and through which the smaiier insects will pass. The adult insects can easily be collected in a test tube and, if it is desired to know whether living insects are present, the closed test tube can be warmed for a few minutes by hand.ISO 605 pdf download.