UO2(HCO2)2·H2O made from depleted uranium. Uranyless Uranyl Acetate Alternative With ultra fine grain structure, TAAB Uranyl Formate offers advan- A new, fast acting non-radioactive contrast solution for TEM tages in negative staining for electron microscopy over uranyl ace- section staining and negative staining as an alternative to tate. uranyl acetate. The 30ml airless bottle extends shelf life and will stain up to 1500 grids. The 200 ml bottle is for automated staining systems.