Ethers can form explosive peroxides, potentially endangering chemists, and interfering with analytical results. The new pressure-rated ether can is constructed of high grade aluminum to reduce the risk of peroxide formation and its seamless construction minimizes vapor leaks.  Our new proprietary screw-top cap allows repeated access and ensures a tight closure to reduce exposure to the atmosphere.   In addition, the ether is packaged under a blanket of nitrogen, eliminating exposure to oxygen during packaging, a key factor in peroxide formation. The product stability resulting from the use of our container allows Mallinckrodt reagent grade ether to be packaged with a BHT preservative level as low as 0.5 ppm. This lower preservative content reduces potential interference in your reactions.