For the lab pros and serious hobby chemists: this is a 150mm flange glass reactor flask. It's a round-bottom vessel (spheroidal shape) perfect for reactions, distillations, or as a receiver flask. Made from high-quality Borosilicate Glass 3.3, so it can handle thermal shock (annealing point 560°C, softening point 820°C). The key feature is the standard 150mm outer diameter flange on the neck, which allows you to easily connect it to other glassware or a reactor head using clamps and a gasket. This listing is for the 500ml size (they also make larger ones). It's a versatile, heavy-duty piece of lab glassware for applications where you need a sealed, robust reaction vessel. Just handle with care, as with all glass.
