A modified Partridge-Smith microflotation cell, this unit is tailored for small-scale mineral flotation tests, typically requiring only 1 gram of mineral sample. It comprises a frit at the bottom, a straight glass tube (approximately 65 mL volume), and a launder. This cell is instrumental in evaluating a mineral's flotation response under precise conditions, including varying pH levels and reagent dosages, with an air flow rate around 35 cc/min. Its design allows for rapid, preliminary assessments of mineral floatability and reagent effectiveness, making it an efficient tool for early-stage research.