Strategic 3-Neck Design for Multitasking: Features a center neck and two angled side necks to allow simultaneous heating, reagent addition, and temperature monitoring. Ideal for complex organic synthesis and reflux reactions.
Extra Heavy Wall Construction: Hand-blown from high-quality Borosilicate 3.3 glass. The heavy-duty wall thickness (3.5mm-5mm) provides superior mechanical strength and resistance to breakage compared to standard economy glassware.
Universal 29/42 Joint Compatibility: Precision-ground 29/42 standard taper joints ensure a vacuum-tight seal. Perfectly fits standard 29/42 condensers, thermometers, and stoppers for a leak-free setup.
Annealed at 560°C for Stability: Proper annealing at 560°C removes internal stress, ensuring the flask can withstand rapid thermal changes (thermal shock) and direct flame heating without cracking.
Professional Lab Standard: Meets ASTM E438 standards. The round bottom shape ensures uniform heat distribution, making it the reliable choice for educational labs and professional research.