Substitute costly fluoropolymer containers with these fluorinated wide-mouth HDPE bottles for improved barrier properties and reduced solvent absorption and permeation. Nalgene™ Fluorinated Wide-Mouth HDPE Bottles with Closure are fluorinated inside and out. Fluorination enhances long-term container performance, prevents permeation loss and yields lower extractables. Provides a cost-effective alternative to costly fluoropolymer containers. Wide-mouth allows easy access. Guaranteed leakproof.