Wheaton glass bottles, 250ml or 8oz amber, 45-400 finish. (8 oz bottle, wide mouth packer, type iii amber, pp/ptfe liner) 8 oz bottles, wide mouth packer, type iii amber, pp/ptfe liner. Amber, usp type iii soda-lime glass ideal for storage of light sensitive samples or dry powders easy removal of contents white polypropylene ptfe lined screw cap hazardous communication label included with each case of bottles allows for content id and safety notification. Warning: this product can expose you to chemicals including tetrafluoroethylene, which are known to the state of california to cause cancer. Prop 65 warning