What replacement ink bottles should I buy for the HP Smart Tank 670?
You should purchase the HP GT53 Black bottle, which yields approximately 4,000 pages, or the HP GT52 Cyan, Magenta, or Yellow bottles, each yielding approximately 8,000 pages. For more information about fill and yield, visit www.hp.com/go/learnaboutsupplies. (Page 2)
From the official HP Smart Tank 670 manual, page 2
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