Good product size should ensure that the ratio of the largest size to the smallest size of more than 90% of the product is less than 3 (the smaller the ratio, the better the particle size).
Usayizi wezinhlayiya zomkhiqizo omuhle kufanele uqinisekise ukuthi isilinganiso sosayizi omkhulu kakhulu nosayizi omncane ongaphezu kuka-90% womkhiqizo ungaphansi kuka-3 (uma isilinganiso sincane, ngcono usayizi wezinhlayiyana).