“…In the articles and the monographs known to us, this value ranges between 0.5 mm [8], 1-1.5 mm [9][10][11][12][13][14][15] and 5 mm [16]. Despite the long-known simplicity of the design of S-chambers [2,9,10,12,15,[17][18][19][20], this type of chamber is in limited use nowadays. Thus, in the literature less than 10% of the publications are devoted to separation with the use of S-chambers.…”