What is ISO 5223- Test sieves for cereals about?
ISO 5223 is an international standard that covers the various types of sieves used for different cereals.
ISO 5223 specifies requirements for test sieves to be used for the laboratory determination of undesirable substances in a sample of cereals and which pass through test sieves of the following nominal sizes:
- Test sieves with long rounded apertures:
1,00 mm x 20,0 mm
1,70 mm x 20,0 mm
1,80 mm x 20,0 mm
1,90 mm x 20,0 mm
2,00 mm x 20,0 mm
2,20 mm x 20,0 mm
2,50 mm x 20,0 mm
2,80 mm x 20,0 mm
3,55 mm x 20,0 mm
- Test sieves with round apertures:
Diameter 4,50 mm
ISO 5223 applies to test sieves with rounded apertures of diameter listed in test sieves with long rounded apertures, used for separating “shrivelled” kernels from rye, durum wheat, common wheat, and barley, (except for those apertures of diameters 2,50 mm and 2,80 mm, which are usually used for the calibration of malting barley).
ISO 5223 also applies to test sieves with rounded apertures of a diameter 4,50 mm are used for separating broken grains from maize.
Note: ISO 5223 does not apply to test sieves used for testing test grain for insect infestation.
Who is ISO 5223- Test sieves for cereals for?
ISO 5223 on test sieves for cereals is relevant to:
- Manufacturers of sieves
- Suppliers and dealers of sieves
- Testing authorities
- Designers of sieves
Why should you use ISO 5223- Test sieves for cereals?
The commercial value of a batch of cereals is affected by the presence of undesirable substances. The amount of these substances in the sample is measured by carrying out various separating processes, of which the principal one is test sieving.
ISO 5223 stipulates the technicalities to carry out a test sieving procedure under conditions determined by commercial practice, contracts, or official regulations, with low accuracy. It presents you with the dimensions given for test sieves, which are, the diameter or the width of the apertures in the perforated plate.
Overall, ISO 5223 is beneficial for users, as it describes those test sieves which are frequently used in commerce.
