The T-502 ink bottle refill replacements are made by Printers Jack compatible for the Eco Tank printers. Compatible Printer Models: Premium ET-7700 EcoTank Printer Premium ET-7750 EcoTank Printer Expression ET-2700 EcoTank Printer Expression ET-2750 EcoTank Printer Expression ET-3700 EcoTank Printer Workforce ET-4750 EcoTank Printer Workforce ET-3750 EcoTank Printer WorkForce ST-2000 EcoTank Printer WorkForce ST-3000 EcoTank Printer WorkForce ST-4000 EcoTank Printer How we are different from other manufacturers? Selected Ingredients: seogolar picks the best raw ink ingredients-powder in the market and test every raw material before putting into production. 3 Level of Ink Filtration: Every ink bottle has to go through 3 levels of refinement. We make sure the mixture size is lower than 0.2 um before ship to our customer. Broad Compatibility: We research the printer system and conducted hundreds of experiments to ensure the compatibility of the printing mechanism. Continuous Quality Control: We test every production with the ink density, surface tension, and color accuracy before we ship to our customers. We built out an ink production record bank internally so to preserve every ink production sample. When do I refill ink? 1 Generally less than your 10% of the cartridge. 2 The printer doesn’t work because of insufficient ink. 3 You don't want the current ink brand. How to Use Them? 1.Make sure the printhead is working fine before refill. 2.Remove the ink refill bottle cap. 3.Peal off the plastic cover of the bottle. 4.Insert the ink nozzle into the ink tank 5.Screw back the ink refill bottle cap. ATTENTION: Mixing different types of ink and without usages for over a long period, it may cause printhead clogging. See more

?Perfect service?If you are not 100% happy with our T502 ink, just return it for a full refund at no additional cost!. ?Reliable Performance?Great quality and brilliant results for Office and Home everyday printing. ISO 9001& MSDS certificate and Strict testing approved, to ensure the quality of printing. ?Cost Efficient & Easy to refill?Each color ink Can print over 7000 pages and Great saving without compromising quality. Easy to refill and don't have to run to the store, work the same as the original, save your time and money. ?Excellent Quality?Through Micron-3 Stage Filtration to Reduce Printhead Clogging. Smooth Color and Textures, clear and natural. ?Compatible Model?Seogol T502 ink bottle formulated for Epson EcoTank ET-2700 ET-2750 ET-3700 ET-2760 ET-3710 ET-3760 ET-4760 ET-15000 WorkForce ET-3750 ET-4750 ST-2000 ST-3000 ST- 4000 printer.