When you need more space for detailed sample identification, these 0.75-inch Tough-Spots® provide the perfect solution. These large, circular PVC labels offer a generous writing surface for labeling 15ml and 50ml centrifuge tubes, cryo boxes, and other larger labware. Like all Tough-Spots®, they are built to withstand the most extreme laboratory conditions, adhering securely through a temperature range of -196°C to 80°C. Their strong adhesive and durable material ensure your critical information remains clear and attached, from liquid nitrogen storage to the water bath. Key Features & Benefits: Large Writing Area: The 0.75-inch (19mm) diameter provides ample space for detailed, legible handwriting with any standard lab marker. Ideal for Larger Tubes: Perfectly sized for labeling larger format tubes, including 15ml and 50ml conical tubes, as well as freezer boxes and other containers. Extreme Temperature Resistance: With a service temperature from -196°C to 80°C, these labels are built for deep-freeze cryogenic storage, freezer use, and general lab applications. Durable PVC Material: Tough PVC construction resists water and most laboratory chemicals, ensuring your handwritten information remains intact. Strong & Permanent Adhesion: Engineered with a powerful adhesive to stick securely to a variety of surfaces, including plastics and cardboard. Convenient Roll Format: Supplied in a dispenser box containing a roll of 500 spots for quick and easy application at the bench.