Ink of Forzik. Print to Vivid. Q: What is the shelf life of Forzik ink cartridges? A: The Forzik ink cartridges can be kept in a dry and cool environment for about a year and a half. We recommend that you use them as soon as possible. Q: What's different about the XL version? A: The XL version has more ink inside, but otherwise everything else is the same. Q: What is the volume in per cartridge? A: 18ml. Q：What is the solvent for this ink? A: They are refilled with dye based ink. Q: Are these garanteed to work as they are remanufactured? A: Each ink cartridge undergoes a strict quality testing procedure to ensure compatibility with your printer and quality printout. We offer an 24-month warranty for Forzik product. So if you have any issue, please contact us firstly via through the following steps: Click "Sold by Forzik Direct" > Click "Ask a question". ② Log into Your Account > Click "Your Account" > "Your Orders" > Find your order and click "Ask Seller". Please feel free to contact us at any time, we will reply you ASAP in 12 hours! Your satisfaction is our first priority!