What's a good scale for measuring out pt/pd and other alternative chemistries? I was sort of thinking of a double-platform scale with a good set of weights. This would help trim costs. But, will it be sufficient? I know that a scale like this can only measure weights in quantum increments. But the water or solvent used can be continuously measured in volume, so I should be able to match any concentration that I want. What are other scales that people use that are reasonably priced. What level of accuracy do I need? The amounts of chemistry can get pretty small, for example, when measuring amounts of the oxidizer to increase contrast.