IFJ_042022_militarytextiles_Zr(OH)4 Type C-03_5000x Ken Norberg September 16, 2022 12 Views A single zirconium hydroxide particle under a scanning electron microscope. The average size for this type of zirconium hydroxide is 30 µm. A single zirconium hydroxide particle under a scanning electron microscope. The average size for this type of zirconium hydroxide is 30 µm.