Takagi water purifier cartridge, model number JC0037. I realized I had purchased the wrong one after opening the package. It has not been installed. It has never been in contact with water. It is unused and has been stored as shown in the photo, secured with a rubber band. Is there anyone who could use this? Please refrain from purchasing if you are concerned, as it has been opened. - Product Name: Water Purifier Cartridge - Country of Manufacture: Japan - Model Number: JC0037 Thank you for looking.