The Apothecary Products Graduated Measuring Cylinders are premium laboratory instruments engineered for high-precision liquid measurement and pharmaceutical compounding. Manufactured from low-expansion Type I, Class A borosilicate glass, these cylinders offer exceptional thermal stability and resistance to chemical corrosion. Each unit features a heavy-duty hexagonal base for maximum stability and a reinforced rim with a pouring spout for drip-free liquid transfer. The permanent white enamel graduations are calibrated "To Contain" (TC), ensuring the accuracy required for rigorous scientific research and clinical testing.