The Short Version
The claim merges two separate Greenpeace investigations into one misleading statement. The Lipton-specific March 2012 test found 9–13 pesticides in three of four samples, with the black tea sample reportedly containing none — not "every tested sample." The "3 to 17 per bag" range comes from a different multi-brand survey of 18 Chinese teas, where the 17-pesticide maximum belonged to a non-Lipton brand. While banned pesticides were indeed found in Lipton products, the numerical framing materially misrepresents the actual findings.