Gay-Lussac Specific Gravity BottleProduct number: 206-200.0
The stopper and bottle have matching serial numbers. The capillary glass stopper is ground to a flat-sided point for take-off of the overflow. The standard taper stopper is not interchangeable as these sets are adjusted precisely for greatest accuracy. (ASTM D-369, D-854; Barret Test H-8; AASHTO T-74; AOAC)