VWR Cryo Labels. Multicolored (Blue, Green, Purple, Red, Yellow) Dots (9.5 Mm Diameter) For 0.5-1.5 Ml Tubes. Temperature Range From -196 To +121 Degree C. Supplied On A 44Mm Core. Can Be Used In Liquid Nitrogen, Ultra Low Freezers. Contains 1000 Labels Of Each Color.