Color:Black Package: 2x for T6641 Black Refill Bottle Ink. Page Yield: up to 6500 Pages per ink bottle (At 5% coverage on A4 paper) Compatible Printer WorkForce ET-16500 ET-4500 ET-4550 Printer. Expression ET-2500 ET-2550 ET-2600 ET-2650 Printer. Expression L100 L110 L120 L200 L210 L220 L300 L310 L350 L355 L365 L455 L550 L555 L565 L1300 Printer. When do I refill ink?①Generally less than your 10% of the cartridge.②The printer doesn’t work because of insufficient ink.③You don't want the current ink brand.How to Use ?①Make sure the printhead is working fine before refill.②Remove the ink refill bottle cap. ③Peal off the plastic cover of the bottle.④Insert the ink nozzle into the ink tank.⑤Screw back the ink refill bottle cap.Friendly Tips：①Ink is still not enough when ink is added: Enter ' check ink volume' > click ' How ' > enter ' Fill the ink tank ' > Next, choose the color showed, follow the instructions until the last step.②Avoid storing in a place exposed to high temperature, and direct sunlight.③Because of the printer's model, print mode and printing software, there will also be differences in printing density and color, please follow the printer's instructions to adjust the color of your preference.④Desktop ink printers are mainly divided into dye and pigment ink, Dye ink has a wide color gamut and rich color expression. Mainly used for photo and image text printing, suitable for indoor use. More affordable. Pigment ink has lightfastness and text sharpness. Mainly used for black text printing and documents that require waterproof and light resistance.Two ways to contact us: ► Directly enter ''Pristar''store > Find and click 'About Seller' > Contact this seller > Sign in your account. ► Directly enter ''Pristar''store > Click ''Ask a question'' > Sign in your account and contact this seller.
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