BorosilÂ® brand Flasks are designed to deliver the best combination of thermal shock resistance along with physical strength and resistance to chemical attack. Borosilâs Round Bottom Boiling Flasks with Interchangeable Joint comply with ISO 4797. Uniform wall thickness distribution and the round bottom shape of these flasks make them ideal vessels for heating. Generally used in the distillation and extraction processes. Large, durable matt-finished enameled area for marking.
100% Satisfaction Guarantee: At Mansion Labs, we want to be sure that the item you choose is the right one for you. Within 30 days of delivery of your order, you may return any merchandise purchased from Mansion Labs in its original condition with your email order confirmation or packing slip. Restocking fees may apply. On items over $275 shipping within the US, we will even arrange free pick up or pay for returns shipping.