Borosilicate 3.3 Glass: Features a low thermal expansion coefficient, high strength, and excellent resistance to acids, alkalis, and chemical corrosion Heat-Resistant: Can withstand autoclaving at temperatures up to 140°C; when heating, use a water bath for gradual warming to prevent direct heat exposure and sudden temperature changes Versatile Laboratory Use: Suitable for laboratory, chemical industries, and research settings, ideal for storing chemical reagents, standard solutions, and culture media, meeting various experimental needs Secure and Practical Design: Equipped with a GL45 screw cap for a tight, leak-proof seal, ensuring safe storage Warranty: 1-year coverage period for your peace of mind, if received damaged, please let us know and we will solve it promptly