... Melting Point Device,SamplerConcentration,Block Heater,Vortex Mixer,Cold Keeper,Mixer Incubator, Rocker, Shaker, Roller Mixer, PCR,etc.Applications:The Tube Roller ... aeration is required or for aiding de-frosting of samples.2. A rolling action without rocking effect. Samples are mixed ... and speed control in 1rpm increment. The AD model provides 2-hours timers (in 10 minute integral) and 10 steps ...