PEFL. With PP screw cap, Ø 53 mm. Durable and specially designed for hard use. A fluorocarbon surface (both inside and outside) provides improved barrier properties and reduces solvent absorption and penetration. Fluorination enhances long-term container performance and prevents permeation loss. Wide stance with low center of gravity provides greater stability. Long, integral spout allows easy pouring. Molded-in graduations (l and gal). Recessed bottom provides second handgrip for pouring. Nalgene® fluorinated containers are useful with most acids, alkalies and aggressive organic solvents. Leakproof.