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Bio-Gate AG's (Bremen, Germany; www.bio-gate.de [5]) plasma-based coatings for implants and medical instruments are available in seven colours. The silver-based HyProtect coatings safeguard against bacterial contamination. The degree of surface hydrophilicity and hydrophobicity can be adjusted to suit specific product requirements. The coatings come in a range of transparent colours to allow visibility of product markings. The pictured devices are made from high-gloss stainless steel; various hues are possible depending on the material being coated and its surface properties.