RS-60 Varable speed rotator with timer is designed for soft vertical mixing or extraction of chemical or biological materials in laboratory. RS-60 Varable speed rotator with timer provides time control of mixing process in 0-6 min range or non stop operation. Universal unique fixating mechanism provides easy fixation of tubes with different sizes and geometry (from small Eppendorf to vacutiner type tubes). RS-60 laboratory varable speed rotator with timer is applicable in all areas of laboratory research & education in biotechnology, molecular biology, biochemistry, microbiology, chemistry, cytochemistry, medicine, gene engineering, diagnostic, food quality analysis.