30nm Endotoxin Free Gold NanoparticlesComposition: Citrate stabilized gold colloid Core Size: 30nm Absorption max: 526nm Particles per ml: 1. 79E+11 Purity: >99% reactant free Endotoxin levels: <0. 5 EU mL Formulation: Supplied in 0. 1mM phosphate buffered saline (PBS) Intended use: Our extensively purified endotoxin free gold nanoparticles are ideal for sensitive applications requiring a minimal amount of contaminants, such as cellular toxicity studies, immunological studies, and aseptic