VOLUMETRIC FLASKS, WITH INTERCHANGEABLE STOPPER, AMBER · White enamel inscriptions · Manufactured from 3.3 borosilicate glass with an amber coating on exterior surfaces to facilitate use with light sensitive solutions · 5 ml to 20 ml supplied with trapezoidal shape for better stability [Capacity 200 ml] [Tolerance ± 0.30 ml] [Stopper Size 14/23]