1.Cold Keeper. 2.ISO,CE Passed. 3.3years warranty. A & E Lab ... Hotplate,Melting Point Device,SamplerConcentration,Block Heater,Vortex Mixer,Cold Keeper,Mixer Incubator, Rocker, Shaker, Roller Mixer, PCR,etc.Application: ... turn it on, and put the sample in, the Cold Keeper can keep your sample at low temperatures for long periods ... (0.2, 0.5, 1.5 and 2 ml) Cold Keeper (ISO,CE Passed, 3years Warranty)