The bottles are designed well and you won't be able to put the wrong colored ink in the wrong tank

They took about 3/4 of each bottle, and at first, I thought, 'oh gee, I get to store bottles or toss good ink,' but after I charged the ink, it said to top the tanks off, and they took the rest of the

Afterward, the tanks are topped-off again with the remaining ink from each bottle

The tank-in-front feature also has the benefit of showing you exactly how much ink is left in each tank

Stuck with something that isn't going to work for my needs and doesn't work as it describes it would.