Absorbance Max: 670 nm Volume (@ 50 OD): 1 mL PEG Linker: 2 kDa Gold nanorods functionalized with carboxyl-terminated polyethylene glycol (PEG) Length: 29 nm – 53 nm Cross section: 7 nm – 24 nm Aspect ratio: 2.2 – 3.9 Absorbance peak: 670 nm – 760 nm Shelf life: > 1 year (4°C storage) Supplied as liquid suspension in PBS or in water with 0.01% (w/v) Tween-20