Why this answer matters
EcoTank bottle families are model-specific; bottle shape, color or retailer suggestions should not replace the manufacturer's model-to-ink mapping.
2 requirements3 verification steps2 primary sources
Requirements
What has to be true
- Use Epson T522 bottles for the cited U.S. ET-2800 model.
- Verify regional bottle numbering when the printer was sold in another market.
Verify it yourself
Use this test sequence
Change one variable at a time so you know which requirement made the difference.
- 1
Confirm the model label is ET-2800.
- 2
Print a color and grayscale reference to identify which channel is actually missing or weak.
- 3
Follow Epson's refill procedure rather than adding ink based only on visual tank level if the printer reports a maintenance condition.
Limits
What this answer does not prove
- Yield depends on content and Epson's ISO methodology.
- Correct ink does not prove a banding/nozzle problem will be fixed by refilling; maintenance may still be required.
Relevant DeviceOK checks
Test the part you can observe
Printer Color Test PagePrint CMYK and RGB reference blocks to inspect missing colors and obvious print-quality problems.
→Printer Grayscale Test PagePrint a stepped grayscale to inspect tonal separation, color casts, and blocked shadows or highlights.
→Printer Fine Line TestPrint fine horizontal and vertical line patterns to inspect broken lines, doubling, registration and feed consistency.
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