Only the largest container is unused. I have checked the operation and disinfected the entire unit with alcohol, but please refrain from purchasing if you are concerned. The following information is extracted from the website: Material: PP, PE, Glass, Titanium coating Capacity (mL): 400 (resin container) Weight (g): 870 (when the mixer container is attached) Power consumption (W): 125 Power supply: AC100V 50/60Hz Width (cm): 10 Length (cm): 11 Cord length (m): Approximately 1.5 Rated time (minutes): 1 minute operation Height (cm): 29.5 You can also add images, so if you have any concerns, please let me know in the comments section before purchasing. ──────────────────────── ◉ To prevent trouble, please check the profile before purchasing. ◉ If you wish to lower the price, please "request a price reduction" or specify your desired price. ※ We may not be able to offer significant discounts due to shipping costs, etc. ────────────────────────