Rely on the industry standard for cryogenic vial identification with Tough-Spots®. These 0.375-inch (9.5mm) labels are perfectly sized for the tops of 1.5ml and 2.0ml microtubes and other common lab vials. Made from durable PVC, these versatile spots withstand the most extreme temperatures, from long-term storage in liquid nitrogen at -196°C to heating up to 80°C. Their strong adhesive ensures they remain firmly attached, providing a reliable, write-on surface for all your sample identification needs. Key Features & Benefits: Ideal for Microtubes: The 0.375-inch diameter is the perfect fit for labeling the caps of 1.5ml and 2.0ml tubes and vials. Extreme Temperature Resistance: With a service temperature from -196°C to 80°C, these labels are built for deep-freeze cryogenic storage and general lab use. Durable PVC Material: Tough PVC construction resists water, and most laboratory chemicals, ensuring your handwritten information stays clear and legible. Strong & Permanent Adhesion: Engineered with a powerful adhesive to stick securely to small, curved, and irregular surfaces without peeling or cracking. Write-On Convenience: The label surface is designed for clear, easy marking with all standard laboratory pens and markers. Convenient Roll Format: Supplied in a dispenser box containing a roll of 1,000 spots for quick and easy application at the bench.