I don't think I'd like to try to make colloid using one of those centrifuges. That IEC is a tabletop clinical centrifuge with limited capacity and G-force. When you make a raw colloid solution--it's very dilute. My test batches were 2-4 liters, so that's a lot to try to spin down in a tabletop fuge. I can't recall the exact g-forces necessary, but you probably wouldn't be able to adequately concentrate the colloid with a small centrifuge. The colloid particles are pretty small (<100nm), so it takes some spin to pull them out of solution.