Tricolor
English name: Oliva tricolor
A vortex mixer, or vortexer, is a simple device used commonly in laboratories to mix small vials of liquid. It consists of an electric motor with the drive shaft oriented vertically and attached to a cupped rubber piece mounted slightly off-center. As the motor runs the rubber piece oscillates rapidly in a circular motion. When a test tube or other appropriate container is pressed into the rubber cup (or touched to its edge) the motion is transmitted to the liquid inside and a vortex is created. Most vortex mixers are designed with 2 or 4-plate formats, have variable speed settings ranging from 100 to 3,200 rpm, and can be set to run continuously, or to run only when downward pressure is applied to the rubber piece.
Vortex mixers are quite commonplace in bioscience laboratories. In cell culture and microbiology laboratories they may be used to suspend cells. In a biochemical or analytical laboratory they may be used to mix the reagents of an assay or to mix an experimental sample and a dilutant.
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Common name: -
Origin and production period:
Located on the sand bottom in warm tropical waters, carnivorous.
Introduction:
Shell medium to small. The spiral tower has a low cylindrical shape, and the spiral tower has a high twist. The shell is shiny and beautiful. The suture is narrowly grooved. The wide mouth of the shell is covered with a cuticle, and the mouth of the shell is narrow. Ditch deep. The shell is surrounded by the foot.