KIMAX Volumetric Flask Class A 10 ml Stopper No. 9 Lot of 11 Flasks

The Kimble (KIMAX) 28014-10 Volumetric Flask is a precision instrument engineered for the preparation of standard solutions and quantitative analysis where high accuracy is non-negotiable. Designated as Class A glassware, this 10 mL vessel is calibrated "To Contain" (TC) its nominal volume at 20°C, adhering to the strict tolerance limits defined by ASTM E288 standards (typically ±0.02 mL for this capacity). This rigorous classification ensures that the single, permanent graduation ring blasted onto the neck represents the exact volume, distinguishing it from general-purpose measuring tools like beakers or cylinders.

The flask is manufactured from KG-33 Borosilicate Glass, a premium material chosen for its low coefficient of thermal expansion and high resistance to chemical attack. This ensures that the calibration remains stable even after repeated washing and sterilization cycles. A defining feature of this specific model is the Standard Taper Ground Glass Neck, which is precision-ground to accept a No. 9 Stopper. This ground joint provides a hermetic seal when matched with the included glass (or sometimes PTFE) stopper, preventing solvent evaporation or contamination of the solution during storage or mixing.

Used; excellent condition.