Practical, graduated glass pipette; natural black rubber teat and ribbed, black plastic screw-cap for our 10ml, 30ml amber & blue glass bottles. Inci: Not Applicable PRODUCT DESCRIPTION For dispensing essential oils, vegetable oils - single and blends, oil-based serums, milk serums, tinctures. Neck size; GL18 10ml Size Description Dropper Closure with: bent ball glass pipette; graduated 0.3ml and 0.5ml, natural black rubber teat and ribbed, black plastic screw-cap for our 10ml amber and blue glass bottles. Dimensions Diameter of the screw cap: 21mm. Length of the whole dropper closure: 77mm. Glass Pipette Length: 55mm. Glass pipette volume: takes a maximum volume of 1.5ml (that is approximately 37 drops of thin essential oils). What containers is the Pipette, Glass with Black Teat and Screw Cap (for 10ml) compatible with? Our Amber Glass Bottles - 10ml Our Blue Glass Bottles - 10ml Note - This product has a natural rubber bulb. Natural rubber can sometimes form a superficial white or greyish appearance on the surface, during storage. This is called 'bloom' and is an entirely natural process. 30ml Size Description Dropper Closure with: bent ball glass pipette; (graduated from 0.2ml, 0.3ml,0.4ml, 0.5ml, 0.6ml, 0.7ml, 0.8ml, 0.9ml, 1.0ml) natural black rubber teat and ribbed, black plastic; screw-cap for our 30ml amber & blue glass bottles. Dimensions Diameter of the screw cap: 21mm. Length of the whole dropper closure: 94mm. Glass Pipette Length: 73mm. Glass pipette volume: takes a maximum volume of 2ml (that is approximately 50 drops of thin essential oils). What containers is the Pipette, Glass with Black Teat and Screw Cap (for 30ml and 50ml) compatible with? Our Amber Glass Bottles - 30ml Our Blue Glass Bottles - 30ml HOW TO USE IT Products that the Pipette, Glass with Black Teat and Screw Cap is ideal for Essential Oils - Single and Blends Vegetable Oils - Single And Blends Oil-Based Serums Milk Serums Herbal Tinctures Products that are not appropriate for this Pipette, Glass; with Black Teat andScrew Cap Too viscous products that will get stuck in glass pipette e.g. Vitamin E Oil or thicker 100% essential oils and blends e.g. benzoin, sandalwood, etc. Storage and Handling It is very important to store these Pipettes in clean, dust-free conditions and be careful to handle them hygienically.