I have CSW MA 1.9 wheel on my cylcocross bike. I already replaced few spokes in the rear wheel, I plan to do a long trek in the coming spring with front and rear pannier (and my weight) and I want to get the strongest spokes that will fit to this specific model, How can I find out which spokes of DT Swiss would be eligible with my wheel?
Since you are already replacing spokes, the easiest way to find out is take a broken spoke from each side of the wheel and measure it. There are no hidden differences, you only need to match the length, thickness and type of spoke head. Note that spokes may be thinner at the center than ends, this is called butting.