The dropper bottle is removable and reusable, lightweight, eco-friendly and easy to clean. Provides accurate dispensing of a wide range of reagents and is an excellent alternative to pipetting bottles. One of the best features of glass dropper bottles is their reusability. You can reuse old medicine dropper bottles with black ribbed caps to store homemade serums and essential oil extracts. Each bottle contains a glass dropper. Light natural colors make it easier to see the liquid level. The dropper tip snaps into place to ensure a secure fit. Amber glass is UV resistant and the 15ml size is perfect for on-the-go. Glass has high transparency, heat resistance and cold resistance. The herbal tincture bottle has an easy-to-use dropper. When the dropper is immersed in water, squeeze the rubber ball on top to draw the contents into the pipette. You can then squeeze the bulb lightly, one drop at a time. Material: glass, rubber Capacity: 15ml Package Included: 8*15ml amber glass dropper bottle 8 * Detachable dropper 8* label stickers Notice: It is recommended to wear professional gloves before using large glass pipettes After aspirating the liquid, the tip must not come into contact with any other objects to prevent dirt from entering. The dropper remains vertical when reading. Wait for the inner wall solution to expire before reading.