EcoTank ET-3850
The EcoTank ET-3850 shipped with one 502 black bottle (127 mL) and one 70 mL bottle of each color, and its specification sheet points to pigment black ink for sharp text. Refills are the full 502 family — black up to 7,500 pages, colors up to 6,000 each. Compatible Clever Supplies bottles are below.
| Bottle | Type | Color | Approx. Yield |
|---|---|---|---|
| Epson T502120 (compatible) | Pigment ink bottle, 127 mL | Black | 7,500 pages |
| Epson T502220 (compatible) | Dye ink bottle, 70 mL | Cyan | 6,000 pages |
| Epson T502320 (compatible) | Dye ink bottle, 70 mL | Magenta | 6,000 pages |
| Epson T502420 (compatible) | Dye ink bottle, 70 mL | Yellow | 6,000 pages |
| Epson 502 Set of 4 (compatible) | Full bottle set | Black / Cyan / Magenta / Yellow | 7,500 black, 6,000 per color |
ET-3850 Ink — 502 Family, Office-Ready Yields The ET-3850 is a business-leaning EcoTank all-in-one. Epson's specification sheet lists its ink as 1 × 502 Black (127 mL) and one each of the 502 colors (70 mL), and calls out the pigment black for extremely sharp text — the reason office documents from this machine look laser-crisp. Colors are dye ink at up to 6,000 pages each; black reaches up to 7,500 pages (ISO/IEC 24712 with Epson's methodology).
Its number neighbor, the ET-3830, also appears in Epson's 502 documentation; the family to avoid is, as always, 522 (ET-2720 / ET-2800 / ET-4800) — smaller bottles, dye-only black, different keying.
Singles and the 4-bottle set below carry our lifetime warranty with 1-year free returns.