How low should I allow ink to go before refilling? Do I have to use whole bottle during refill? How do I reset ink level in software for ET2550?

visually check the tank levels for each colour. The ink should be above the lower line on the tank casing. You do not have to use the whole bottle during refill but, because the ink quality will decrease once the ink is exposed to air, ensure that you screw the bottle lid down tightly, store upright and use the remaining ink as soon as possible. If you leave the refill task until the ink level is close to the lower line the tank will take the full bottle during refill.

Is this ink suitable for the eco tank et-4550 printer?

I think the only difference between 774 and 664 is the size. The 4550 printer has a large black ink capacity. If anything, the inks are the same- just the tops are different. I syringed the remaining ink from our 664 bottles when I replaced the printer with different eco tank model and put it into the printer tanks

Do i have to have "amazon dash replenishment " to buy this?

Don't know, but I don't have dash replenishment to buy it

can i use this on epson xp 304 please

Hello Paul, No these are only meant for the Ecotank that has refillable ink tanks. XP-304 has ink cartridges that are not refillable. Kind Regards.

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🖤 Print More, Stress Less — The Ink That Keeps You Moving

UNMATCHED PAGE YIELD - Print up to 6500 crisp, professional pages per bottle—stay ahead without constant refills.
GENUINE EPSON QUALITY - Experience flawless print performance with 100% authentic Epson ink designed for your EcoTank printer.
LIGHTWEIGHT COMPACT - At just 100g, this sleek bottle fits effortlessly into your workspace without clutter.
SEAMLESS COMPATIBILITY - Perfectly engineered for L355 and L555 models, ensuring hassle-free refills every time.
ECO FRIENDLY EFFICIENCY - Reduce waste and save money with high-capacity ink that keeps your office green and productive.

The EpsonT6641 Black 70m Ink Bottle is a genuine Epson product designed for L355 and L555 EcoTank printers, delivering an impressive yield of approximately 6500 pages per bottle. Lightweight and compact, it ensures high-quality black prints with eco-friendly efficiency, making it the smart choice for professionals seeking reliability and value.

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Manufacturer	Epson
Brand	Epson
Model Number	235H549
Product Dimensions	0.16 x 0.04 x 0.04 cm; 100 g
Batteries	1 Lithium Ion batteries required.
Colour	Black
Number of Items	1
Ink Colour	Black
Manufacturer Part Number	235H549
Item Weight	100 g

EpsonT6641 Black 70m Ink Bottle

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