A range of dedicated testers to produce color prints of conventional and UV offset inks. Available in versions with print width of 35, 50 and 70 mm and with multiple prints on one substrate. An adapter is available to print directly on metal cans or tubes or the special version CT-1 can print on any diameter of tubes and cans from inner diameter 16 mm up to outer diameter 68 mm, the CT1x3 can do the same but in up to three prints next to each other on the same tube or can.