... ,Stirrer Hotplate,Melting Point Device,SamplerConcentration,Block Heater,Vortex Mixer,Cold Keeper,Mixer Incubator, Rocker, Shaker, Roller Mixer, PCR,etc.Application ... :Most Economic Device To Replace The Ice Bucket.Simply plug it in, turn it on, and put ... the sample in, the Cold Keeper can keep your sample at low temperatures for long ...