(i) Filtration or sieving
(ii) Handpicking or sieving
(iii) Churning
(iv) Winnowing
(v) Separating
(vi) Sedimentation and decantation
(i) Filtration or sieving
(ii) Handpicking or sieving
(iii) Churning
(iv) Winnowing
(v) Separating
(vi) Sedimentation and decantation