Benchmark Scientific’s R2020 Roto-Mini is a rotating mixer that provides a wide range of mixing capabilities. Suitable for an array of laboratory applications including re-suspension, protein binding, nucleic acid purification, etc. the mixers include interchangeable tube holders for accommodating all common tube sizes from 0.5 ml to 50 ml. The motion can be adjusted from vertical (end over end) mixing, to horizontal (rolling or hybridization style) mixing.