Biorays Blood tube roller mixer is used for gentle mixing or agitation of liquid samples contained in small tubes. It provides a convenient and efficient method for blending, resuspending, or mixing substances within the tubes.

This roller mixer is commonly used in various laboratory applications, including molecular biology, biochemistry, microbiology, and clinical diagnostics. They are especially useful for enzyme reactions, DNA hybridization, immunoprecipitation, and antibody staining tasks.

Overall, this roller mixer designed for 15 tubes with a capacity of 3ml each provides a reliable and efficient solution for the gentle mixing of liquid samples in a laboratory setting.