KPL's Silver Enhancer Kits are available for use in membrane based applications. This simple yet sensitive system is optimized for use with KPL's gold conjugates for the amplification of gold particles. Silver builds up on the surface of the gold particles as a result of the reduction of silver from one solution to another. Silver Enhancer kits offer low background, sensitivity to the picogram level and slow, controlled development. 15-25 minutes development for microscopy applications.