A laboratory coat must be used. The air extractor in the workshop is activated. Check if the sieve material is clean.
- Sieves, 32, 63, 125 and 250 m
- Various stainless steel bowls
Start with the coarsest sieve, and place it upon a collecting container. Then apply the sample and sieve it by making turning movements. The material smaller than the sieve can be sifted again with a smaller, finer sieve. In this way different fractions will be collected.
Write down the fraction size on the containers.
With a large sample a sieving machine can be of help.
The sieves must be shaken in the ultrasonic cleaner during 1 hour and subsequently rinsed and dried at 110ºC.