Available here are 1 dram clear glass vials with black phenolic PV lined caps. The phenolic caps feature a pulp/poly liner that consists of a pol-vinyl film adhered to a white pulp paper backing. These PV-lined caps offer good chemical resistance against mild acids, solvents, oils, and other aqueous solutions. Clear glass vials are stylish for packaging small volumes of essential oils, perfumes, pharmaceuticals, and more.