Non-fluorescent silica nanoparticles made of pure silica, surface coated with 2-[methoxy(poliethylenoxy)6-9 propyl]silane.
Available in solution, in one of four sizes: 8, 20, 40, or 60 nm. Liquid samples (aqueous or ethanol) have a concentration of 25 mg/mL. Solutions are sold in 1 mL vials. Sample stability exceeds 6 months.
Homogenization in an ultrasonic bath or agitation via a vortex or roller agitator is required prior to use of liquid samples.