The most chemical-resistant NALGENE wash bottle, molded entirely of fluoropolymers, PTFE FEP bottle with ETFE screw closure/stem and draw tube. One-piece stem and closure for leakproof service. Provide contamination-free dispensing ‚Äì useful for trace element work. Phthalate free. Safety Tip: After autoclaving adjust nozzle angle to <90° to ensure stream is pointing downward.