So this is what I want to implement: A looped belt feeding 10 labs The belt can have Red, Green and Black science (since i have unlocked only those till now in my first playthrough) The belt, at any time, must hold only up to 40 science of each color What I have tried is using three Decider Combinators for each color which is just "if (color) color = 1" taking belt as input and giving output to inserter. This is shown in my second screenshot. I wanted to know if this is the optimal way to implement such a belt? I think I could scale this up pretty easily as well when I unlock the rest of the sciences. submitted by /u/FormativeAnxiety [link] [comments]