Anti-Corrosion Bags Live Up to Claims, But So Does Ziploc

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Our test of anti-corrosion bags presented conditions far more rigorous than what one might typically encounter for equipment stored on a boat.

Our testers estimated that the exposure test was the equivalent of five years of exposure aboard a boat. Although the test demonstrated that a DIY solution using sandwich bags can nearly match performance, it also demonstrated that the makers claims of five years of protection could, in practice, be accurate.

1. Bags lying on the compost. The anti-corrosion bags are amber and have a slightly rough texture.

anti corrosion bags

Drew Frye

2. After a year in the Zerust bag, the compact disk was okay, but the aluminum coupon was corroded.

anti corrosion bags

Drew Frye

3. Corrosion was visibly on every coupon in the bag that was left open to the weather. The protective bags did not stand out as testers had expected.

anti corrosion bags

Drew Frye

4. The coupons in the Zerust bag fared better than the exposed coupons.

5. Spent silica beads (pink, on left) indicate that the beads are doing their job absorbing moisture. Recharged (blue) beads are on the right.

Darrell Nicholson, editor of Practical Sailor, grew up boating on Miami’s Biscayne Bay on everything from prams to Morgan ketches. Two years out of Emory University, after a brief stint as a sportswriter, he set out from Miami aboard a 60-year-old wooden William Atkin ketch named Tosca. For 10 years, he and writer-photographer Theresa Gibbons explored the Caribbean, crossed the Pacific, and cruised Southeast Asia aboard Tosca, working along the way as journalists and documenting their adventures for various travel and sailing publications, including Cruising World, Sail, Sailing, Cruising Helmsman, and Sailing World. Upon his return to land life, Darrell became the associate editor, then senior editor at Cruising World magazine, where he worked for five years. Before taking on the editor’s position at Practical Sailor, Darrell was the editor of Offshore magazine, a boating-lifestyle magazine serving the New England area. Darrell has won multiple awards from Boating Writer’s International, including the Monk Farnham award for editorial excellence. He holds a U.S. Coast Guard 100-ton Master license and has worked as a harbor pilot and skippered a variety of commercial charter boats.

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