High Quality

Gold Colloid, Co. uses a proprietary synthesis method to prepare the highest quality gold nano-particles in the industry. Our method of gold colloid production has been validated in electron microscopy studies as well as have been used in immunoassays throughout the globe. Our particles are spherical in shape and uniform in size. We offer 40 nm size particles for use in lateral flow and flow through diagnostic applications. We can also prepare 20 nm and 60 nm for custom orders.