C1 Series dry storage cabinet's humidity range is 1-50%RH(adjustable). The humidity storage cabinet could go down to <10%RH, but when it is <8%RH, it is not stable, so if you want ultra-low humidity, you could choose our ultra-low humidity dry cabinet CF1 or humidity control dry cabinet C2E series. The C1 Series has two series, C1U and C1B. It could store different kinds of electronic gadgets, optical lenses, lab devices, microscopes, chemical agents, etc.