BASEL, Switzerland - Ciba Specialty Chemicals has formed a worldwide marketing cooperation with Bio-Gate Bioinnovative Materials GmbH, Germany. Bio-Gate has developed a highly sophisticated silver-based technology portfolio and a powerful testing method for screening antimicrobial efficacy and for quality assurance of antimicrobial products for a variety of industries. With the marketing cooperation, Ciba Specialty Chemicals becomes the worldwide exclusive marketer of these antimicrobial products and services based on high-porosity elemental silver.