Cereal particle testing standards are published by ISO. These documents include the determination of alveograph properties of dough, determination of hidden insect infestation, and determination of impurities of animal origin. These standards are necessary if your business manufactures cereal products and can protect the health and safety of your customers.
This document specifies a method of determining, using an Alveograph, the rheological properties of different types of dough obtained from common wheat flour ( Triticum aestivum L.) produced by industrial milling or laboratory milling. It describes the Alveograph test and how to use a laboratory mill to produce flour in two stages: — stage 1: preparation of the wheat grain for milling to make it easier to separate the bran from the endosperm; — stage 2: the milling process, including breaking between three fluted rollers, reduction of particle size between two smooth rollers and the use of a centrifugal sieving machine to grade the products.
1.1 This document specifies four rapid methods for estimating the degree of, or detecting the presence of, hidden insect infestation with sampling (see Clauses 4 to 6) or without sampling (on-site probing, see Clause 7) in a cereal or pulse lot. NOTE The characteristics leading to the choice of rapid method are summarized in ISO 6639-1:2025, Table 1. 1.2 The method by determination of carbon dioxide production (see Clause 4) is applicable to testing whole grains. It does not apply to testing: a) finely ground grain products, as there is a risk that particles of material will be sucked up with air samples; or b) grain products with moisture contents greater than a mass fraction of 15 %, because of the risk of carbon dioxide produced by the products themselves and by microorganisms interfering with the results. In addition, the method does not apply to the rapid testing of grain products onto which carbon dioxide has already been adsorbed in large quantities (e.g. grain stored in a confined atmosphere, when there are clear external indications of heavy infestation). The method is applicable to coarsely milled or kibbled grain products, provided that they have been sieved before testing to remove fine particles and loose insects. The method does not permit the presence of dead adults. 1.3 The whole grain flotation method (see Clause 5) is applicable to detecting hidden infestation in most cereals and pulses but only on a qualitative basis. 1.4 The acoustic method operating on a grain sample (see Clause 6) is applicable to detecting living (and active) insects (larvae and adults before their emergence from a kernel) inside grains in a sample. It does not permit dead adults and larvae or living eggs and pupae (non-feeding stages) to be detected. 1.5 The on-site assessment acoustic method (see Clause 7) is applicable to detecting adult insects and larvae feeding on the grain inside without taking samples. It does not apply to detecting inactive stages (eggs, nymph and moulting).
This document specifies a method for determining the content of impurities of animal origin in wheat flours, with or without additives and having an ash yield not exceeding a mass fraction of 0,75 %, and in durum wheat semolinas. This method permits the separation and quantification of contamination of animal origin, such as insects at all stages of their development and their fragments, rodent hairs and their fragments, and mites.