Cryogenic dot labels are ideal for labeling 0.2ml PCR tube tops, 0.2ml PCR tube caps, 0.2ml PCR tubes, 0.2ml PCR vial caps. These labels can withstand high temperatures at +110°C and the labeled PCR vials can be placed inside PCR thermo cycler and PCR machines and undergo the complete PCR cycle. These ultra-small diameter cryogenic labels are the smallest cryogenic circle labels which are made from special cryogenic materials to withstand prolonged freezer storage in -120°C freezers, -80°C freezers, -20°C freezers, dry ice and refrigeration. They are waterproof and have a strong permanent adhesion to polypropylene tubes, vials and other plastic tubes and containers. These freezer grade circle labels are available in 15 colors and packs of assorted 15 colors for color coding and easy identification of samples. They can be written on with permanent markers. These labels are available also in roll format for thermal-transfer barcode printing. We provide serial number printed and 2D barcode printed PCR tube labels for 0.2ml PCR tube tops and tubes. Labels are designed for tube top diameter 0.25". These Cryo MiniDots are FDA approved for FDA 21 CFR 175.105 indirect food contact and can be used in food industry for identifying of food containers for freezer storage. The labels can be sterilized by Gamma irradiation.