The 64 mm tall, 15 ml clear dropper bottle is a premium, excellent-quality, clear (flint) FSSC 22,000 and food grade certified, 100% non-toxic and 100% lead-free, and microwave and dishwasher safe. The glass bottle is inert, unreactive, and does not leach chemicals into your product. The glass bottle is designed for packing cosmetic essential oils, serums, etc.