4 oz Cobalt Blue Glass Boston Round Bottles with Black Phenolic Lined Caps
The Boston Round Bottle (also known as a Winchester Bottle), can hold almost any liquid or solid. Boston Round Bottles have a narrow neck size when compared to other container types and Cobalt blue glass provides a bright and appealing color. The blue shade of this glass is obtained by using cobalt oxide. The durable black phenolic cap provides strength and durability with heat-resistant and insulating properties. Phenolic caps are ideal for variety of aggressive products due to strong resistance to chemical corrosion and moisture absorption. Caps include a pulp & vinyl liner. Pulp & vinyl liners consist of a vinyl coating applied to HDPE coated paper which is laminated to pulp-board. Considered a general-purpose liner, a pulp & vinyl liner is often used for food, beverage, and chemical applications including mild acids, solvents, oils and aqueous products. Not recommended for active hydrocarbons or bleaches.