Primary wound dressing made from sodium carboxymethyl cellulose (NaCMC) containing 1.2% silver in an ionic form. Interacts and absorbs with exudate forming a hydrophilic gas-permeable gel that confines microorganisms to the contours and facilitates healing. Can be easily removed without causing much pain. No residues are left on the surface of wounds. Dressings are packed after sterilisation by gamma-ray radiation. Available as a flat non-woven pad for large wounds and ribbon for packing cavities.