Perfume Studio 15ml Calibrated Cobalt Glass Dropper Bottles - Pack of 6 Plus Free Perfume Sample Vial (.5 Oz, Cobalt) Pack of 6, 15ml cobalt glass dropper bottles Plus Free Perfume Sample Vial 7x66mm straight tip glass pipette, printed with .25, 0.5, .75 and 1.0 mL calibrations Ideal for essential oil blends Reusable and Durable - Amber and Cobalt Glass Protects your oils from harmful UV light Perfume Studio is the manufacturer and only authorized seller of this product.