⟨x⟩ Vs. ⟨ch⟩: the letter ⟨x⟩ derives from Latin ⟨x⟩ or ⟨s⟩, or from Arabic ⟨dh⟩ and usually corresponds to Spanish ⟨j⟩. You could store it inside a sealed bottle for upto two days during the fridge or freeze it in an ice tray and use for camps or treks. https://www.buyfavoritesdisposables.com/