1.Cold Keeper. 2.ISO,CE Passed. 3.3years warranty. A & E ... Stirrer Hotplate,Melting Point Device,SamplerConcentration,Block Heater,Vortex Mixer,Cold Keeper,Mixer Incubator, Rocker, Shaker, Roller Mixer, PCR ... it on, and put the sample in, the Cold Keeper can keep your sample at low temperatures for ... 20 X inserts for combination vials (0.2, 0.5, 1.5 and 2 ml) Cold Keeper (ISO,CE Passed, 3years Warranty) ...