🔬 Elevate Your Experimentation Game! Designed for long-term freezing without compromise. Smooth walls ensure optimal visibility of your samples. Experience unmatched sealing with our advanced cap technology. Perfect for labs, schools, and hospitals alike. Easily read liquid volumes with the integrated scale. 1-10ml scale Good sealing cap Low temp resistance The Z-Color 10pcs 10ml Lab Plastic Frozen Test Tubes are designed for optimal sample preservation with excellent sealing capabilities, low-temperature resistance, and clear visibility, making them ideal for educational and professional laboratory settings.