Extended shelf lifeâ€”won't dry up like liquid ink cartridges. Clean and easy to use -- Just drop them into the shape and color-coded delivery slots. Consistent output that is accurate, convenient and remarkably cost effective. Tektronix ColorStixÂ® solid inks provide a very appealing cost-per-print, without the expense of dye sublimation output. Safe and easy to work with--and minimal waste, so they're easy to live with too.