CLASSIC GLASS STOPCOCK: Features a precision-ground solid glass stopcock. When properly greased, it provides a time-tested, reliable high-vacuum seal trusted by generations of chemists for general synthesis and solvent handling.
ULTIMATE CHEMICAL INERTNESS: Constructed entirely from Borosilicate 3.3 glass. This all-glass design is ideal for reactions involving harsh solvents that might degrade rubber O-rings or swell plastic components.
COST-EFFECTIVE & DURABLE: The perfect solution for equipping educational laboratories or stocking research facilities on a budget. Offers professional glass quality and heavy-wall safety at an accessible price point.
KJELDAHL-STYLE PEAR SHAPE: The tapered bottom concentrates liquid and solid residues, allowing for superior magnetic stirring efficiency and easier product recovery compared to round-bottom flasks.
HEAVY WALL SAFETY: Manufactured with thick, uniform walls to withstand the pressure differentials of vacuum distillation and the thermal shock of direct flame heating (ASTM E438 Standard).