Elevate your laboratory experience with the Kimble/Kontes KIMAX Test Tubes. Made from high-quality borosilicate glass, these reusable test tubes are designed for durability and resistance to thermal shock. The Kimble Chase 45042 20150 model comes in a convenient case of 8, making it perfect for both professional and educational settings. Each tube features a smooth finish for easy cleaning and handling, ensuring reliable results in your experiments. Ideal for chemical analysis, biological studies, or simple classroom demonstrations, these test tubes are a must-have for any lab enthusiast!