Thank you for choosing to shop with us! We appreciate your support and look forward to serving you again in the future. All / Gold Particles All Antibodies Antigens Blocks & Stabilizers Gold Particles Kits Colloidal Gold (100 OD) - 10 mL $299.95 Select Size 20 nm 30 nm 40 nm 50 nm Add To Cart Colloidal Gold (2.0 OD) 40 nm - 1L $1,000.00 Add To Cart Colloidal Gold (1.0 OD) 40 nm - 1L $575.00 Add To Cart