nanoComposix Brands

		Tight Size Distribution	Wide Variety of Surfaces	Available Dried	Sterile & Endotoxin-Free	Highly Concentrated	Lower Cost	Easy Bioconjugation
	Learn more +		(certain products)	(certain products)
Monodisperse and unagglomerated Standard colloidal concentration Seven standard surfaces (citrate, tannic, PVP, lipoic acid, PEG, BPEI, silica)
	Learn more +
Monodisperse and unagglomerated Concentrated to 1 mg/mL Extensively washed (10×) Manufactured sterile Low endotoxin levels Six standard surfaces (citrate, tannic, PVP, lipoic acid, PEG, BPEI)
	Learn more +
Designed for bioconjugation Passive and covalent conjugations Available as standard 40 nm gold nanospheres or our novel 150 nm gold nanoshells, which provide greatly increased sensitivity Go to the BioReady page
	Learn more +
CVs < 25% 2–5 mg/mL or dried Two standard surfaces (PVP, silica) 1/100 cost of BioPure

Liquid or Dry?

In order to prevent nanoparticle aggregation, most nanoparticles are sold as a suspension in a liquid. Recently, we have developed methods to freeze dry (lyophilize) nanoparticles into a powder. The powder format has a number of advantages including:

• Multi-year shelf life
• Can be resuspended in a variety of different solvents
• Can be prepared at a very high concentration
• Once resuspended, has a consistent free-ion concentration

Dried powders are available as standard products for many of our gold and silver particles. Other dried formulations of nanoparticles are available on request.