This is a 400ml cleaning solution for keeping the filters and interior of Panasonic humidifiers clean. - Brand: Panasonic - Purpose: Humidifier cleaner - Capacity: 400ml x 2 bottles - Model Number: FE-Z40HV Stored at home. I am selling this because I don't seem to have an opportunity to use it. Unused. The bottle is dented. I think it will return to its original shape if opened, but I will not open it. I will send it in this condition. Stored at home. I am selling this because I don't seem to have an opportunity to use it. Instant purchase OK.