Table 2.

Test dressings. ^†Formulation proprietary to ConvaTec Ltd.

Commercial name	Physical and chemical composition	Coding
AQUACEL Extra	Two layers of a needle-punched nonwoven fleece of sodium carboxymethylcellulose (CMC) fibres	CMC
AQUACEL Ag Extra	Two 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+ Extra	Two layers of a needle-punched nonwoven fleece of sodium silver CMC fibres enhanced with disodium ethylenediaminetetraacetate and benzethonium chloride†, stitched with a high purity cellulose thread (approximately 1.2% w/w or 0.17 mg/cm2 silver)	NGAD
Acticoat™ 7	Three 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-Adherent	A 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