Store at 4°C under inert atmosphere. For maximum recovery of product, centrifuge the original vial prior to removing the cap.
References
Wien, R., et al.: Lancet, 254, 711 (1948), Furr, J.R., et al.: Int. J. Pharm., 34, 115 (1986), Wiens, J.J., et al.: Can. J. Ophthalmol., 23, 107 (1988),