It is pointless to do lab flotation tests if you do not know How to Analyse Flotation Test Results. Here are must read articles on learning float test result evaluation.
Mineralogy & Flotation: Floatability VS Selectivity Test Assessment
Flotation Kinetics: Mass & Water Recovery VS Entrainment & Mineralogy
Timed Flotation Test: Concentrate Collection & Cumulative Grade Recovery Curve
Laboratory Flotation Test Procedure