Safe, durable cost-efficient line of narrow-mouth bottles and carboys feature fluorinated surfaces (inside and outside), for improved barrier properties and reduced solvent absorption and penetration. Fluorination enhances long-term container performance and prevents or reduces permeation loss. Useful with most acids, alkalies, and aggressive organic solvents. Split- and puncture-resistant. With polypropylene screw closure. Heavy-duty walls. Leakproof. The 10L (21/2 gal.) and 20L (5 gal.) sizes feature molded-in graduations. Closures not available separately.