Elevate your laboratory experience with the Kimble Chase 25277 Round-Bottom Boiling Flasks. This pack of two 500 mL flasks features a ST 19/22 joint, ensuring a secure fit for your experiments. Crafted from high-quality KIMAX glass, these flasks are designed for durability and optimal heat distribution, making them perfect for boiling and refluxing applications. The round-bottom design allows for even heating and minimizes the risk of bumping. Ideal for chemists and researchers, these flasks are a must-have for any lab setup.