Streptavidin - 20nm Silver ConjugateGold nanoparticle core size: 20nm Absorbance (lambda max.): 398 410nm Optical density (OD): 7. 5 Conjugated protein: Streptavidin, from Streptomyces avidinii Working dilution: 1: 5 1: 100 (application dependant) Supplied in: 1XPBS (pH 7. 4), 20% glycerol (v v), 1% BSA Applications Silver conjugates are suitable for use in immunoblotting, light microscopy, darkfield microscopy, and electron microscopy applications. Advantages of Silver Conjugates