Colloidal Gold Solution, 0.005%

Colloidal gold has been used for centuries in the preparation of stained glass for windows and fine glassware. In recent years, colloidal gold particles have become a useful tool for microscopists. Colloidal gold particles are especially useful for biological electron microscopy.

• Homogeneous preparations of particles varying in size from 3 nm to 20 nm can be easily prepared.  
• Colloidal gold suspensions are inexpensive to prepare.  
• Most proteins can be easily coupled to colloidal gold particles.  
• Proteins coupled to gold particles do not appear to lose their biological activity.  
• The colloidal gold particles can be easily seen in the electron microscope.  
• Colloidal gold probes can be used for light microscopy. The larger gold particles can be directly observed by the light microscope. Smaller particles are detected by silver enhancement or epipolarized illumination.  
• The same probes can be used for both LM and TEM immunocytochemistry.

 Size Range: 15-25 nm

Contains .01% Gold Chloride per ml