HP 88 Ink refill set for CIS/CISS or refillable cartridges using Officejet Pro L7580 L7590 L7650 L7680 K550 K5400 K8600

These bottles are designed for direct filling into your CIS/CISS or refillable cartridges. You can also use this ink to fill OEM cartridges but you must know how to and you must have your own tools to do so as we don't provide additional info for refilling OEM cartridges. Refill ink for HP printers using HP88 ink : Officejet Pro L7580 L7590 L7650 L7680 K550 K5400 K8600 Easy and safe Refill Process -No Syringes Needed!! No dangerous needles for you and your family!! -Our ink bottle has easy fill spout tip. It fills directly into your CIS/CISS and refillable cartridges Ink Quality and Origin -Our ink is made in USA and it is made specific according to OEM cartridge number(not universal ink). Our ink also has the same standard as OEM which includes colors, PH, surface tension, viscosity, and filtration. -Other cheaper imported ink is usually universal ink and has lower standard. Colors will be off as well. UV Resistant (against fading) -Our USA made ink has the highest UV resistant rating on market which prevents colors from fading -Other cheaper imported ink either has no UV or very low rating which will cause your prints to fade very soon and eventually disappear completely. Ink Type -Same as OEM: black w/ pigment ink, Cyan, Magenta, Yellow w/ dye ink -Most of imported ink only uses dye only, no pigment black Ink Bottle Volume -480ml total, 120ml(4oz)/bottle -The set includes all 4 colors(M,C,Y,BK)