There is disclosed a substrate with an 
electron donating surface, characterized in having 
metal particles on said surface, said 
metal particles comprising 
palladium and at least one 
metal selected from the group consisting of gold, 
ruthenium, 
rhodium, 
osmium, 
iridium, and 
platinum, wherein the amount of said metal particles is from about 0.001 to about 8 μg / cm2. Examples of coated objects include contact lenses, pacemakers, pacemaker electrodes, stents, dental implants, rupture nets, rupture mesh, blood 
centrifuge equipment, surgical instruments, gloves, blood bags, 
artificial heart valves, central venous catheters, 
peripheral venous catheters, vascular ports, haemodialysis equipment, 
peritoneal dialysis equipment, 
plasmapheresis devices, 
inhalation drug delivery devices, vascular grafts, arterial grafts, 
cardiac assist devices, wound dressings, intermittent catheters, ECG electrodes, 
peripheral stents, bone replacing implants, orthopaedic implants, orthopaedic devices, tissue replacing implants, 
intraocular lenses, sutures, needles, 
drug delivery devices, endotracheal tubes, shunts, drains, suction devices, 
hearing aid devices, urethral medical devices, and artificial blood vessels.