Table 2: Test dressings. proprietary to ConvaTec Ltd.

Commercial namePhysical and chemical compositionCoding

AQUACEL ExtraTwo layers of a needle-punched nonwoven fleece of sodium carboxymethylcellulose (CMC) fibresCMC
AQUACEL Ag ExtraTwo layers of a needle-punched nonwoven fleece of sodium silver CMC fibres (approximately 1.2% w/w or 0.17 mg/cm2 silver) [2]SCMC
AQUACEL Ag+ ExtraTwo layers of a needle-punched nonwoven fleece of sodium silver CMC fibres enhanced with disodium ethylenediaminetetraacetate and benzethonium , stitched with a high purity cellulose thread (approximately 1.2% w/w or 0.17 mg/cm2 silver)NGAD
Acticoat™ 7Three layers of a metallic (nano) crystalline silver-encrusted high-density polyethylene (HDPE) mesh alternating with two layers of a rayon polyester nonwoven fabric, bonded at intervals by ultrasonic welding of the HDPE (approximately 8.4% w/w or 1.48 mg/cm2 silver)NCSD
Silvercel™ Non-AdherentA nonwoven fabric comprised of a blend of metallic silver-coated nylon fibres and calcium alginate/CMC fibres between two apertured sheets of ethylene methyl acrylate (EMA) (approximately 4% w/w or 1.11 mg/cm2 silver [8])SNAD