Borosil 1509 Reagent Bottles Narrow Mouth with I/C Glass Stopper, Amber: Borosil 1509 reagent bottles feature a narrow mouth design and come with an interchangeable (I/C) glass stopper. Additionally, they are made from amber-colored glass, providing protection against light-sensitive reagents or samples. These bottles are ideal for storing light-sensitive chemicals or reagents in laboratory settings while maintaining their integrity.