Coloplast® Biatain® Soft Ag Alginate Dressing with Silver 1" x 17-1/2" Rope Filler High Absorption Fiber-free Coloplast® Biatain® Soft Alginate Dressing with Silver is a fiber-free alginate offering superior strength and absorption. The silver ions released in the presence of wound exudates are an effective antimicrobial agent acting against a broad spectrum of microorganisms frequently associated with the bacterial colonization and infection of wounds. Odor reduction results from the antibacterial effect in the dressing.