18-DIN White Tamper-Evident Vertical Dropper Cap

It is relevant to serums, essential oils, liquid supplements, extracts, and tinctures. The dropper assembly must balance dosage control with clean return, comfortable grip, and reliable bottle sealing. Specified as Part 113390, the 18-DIN White Tamper-Evident Vertical Dropper Cap brings its key size, finish, material, and color attributes into one development reference. Qualification should cover thread engagement, liner compatibility, line application, and expected storage conditions.