4x4oz Nano Refill Ink and 4 Refill Syringe for HP940 cartridge for HP Officejet Pro 8500 printer , HP Officejet Pro 8000 printer ... Water-based photo dye inkjet inks Smell: Normal odor Stability: No settling in 3years (at normal storage) Temperature: -15C no frozen, 70C no gelling High Quality! Best Service!