Borosilicate glass reagent bottles suitable for the longer term storage of aggressive chemicals such as nitric acid, sulphuric acid, bromine etc. Each bottle comes with a high quality European manufactured red PBTB GL45 screw cap with cushioned PTFE coated silicone liner and red ETFE pouring ring, providing a high level of resistance to chemicals. Also avaliable in amber glass. Spare caps, pouring rings and cap liners are also available separately. Please note: liners do not fit the blue screw caps, which are designed to be used without a liner. All parts are autoclavable. Sold individually.