Paragraph 3 APPARATUS
3.1
Sample divider (optional).
3.2
Sieves with apertures of 0.2 mm and 0.5 mm.
3.3
250 ml flasks, stoppered.
3.4
Porcelain pestle and mortar or grinder.
Sample divider (optional).
Sieves with apertures of 0.2 mm and 0.5 mm.
250 ml flasks, stoppered.
Porcelain pestle and mortar or grinder.