The affordable Amber Glass Bottles with an 18mm neck size is often called aromatherapy amber bottle. volume size vary from 5ml to 100ml and can be used for many application such as homoeopathy, tonic bottles, Elixer glass bottles, and food flavouring bottles. Closure options are serum pumps, treatment pumps, fine mist spray, poly cone lined lid, glass droppers and drip inserts with tamper-evident lids