Numerous researchers have used a device developed by
Glembotsky (1953) to measure bubble–particle attachment time,
and have shown that flotation recovery is inversely proportional
to bubble–particle attachment time (Ye et al., 1989; Yoon and
Yordan, 1991; Albijanic et al., 2010a). The Glembotsky device is
based on keeping a bubble in contact with an upper surface of