This 1 Liter Teflon® wash bottle is designed for safer handling of aggressive solvents strong acids organic solvents and oxidizers/peroxides. Bottle stem and draw tube are constructed of FEP with a Tefzel® ETFE screw closure EPR O-ring and a PTFE membrane that vents vapors to reduce pressure buildup inside the bottle. Easy to open and close spout adjusts stream size; when closed it minimizes dripping. Green polypropylene hang tags are included for color coding reagents. Write on or affix 2 x 3 inch lables to the hang tags. Bottle is transparent and fully autoclavable for sterile applications; low in extractables for high-purity use. Useful over a temperature range from -105° to +150°C. Material: FEP bottle PTFE vent membrane ETFE screw closure EPR O-ring and attached FEP stem and draw tube. Color: green. Capacity: 1L. 2/Case. Nalgene® #: 2400-1004.