When scanning a planet, the UI includes meters for each of the resources you might collect. The bars in each of these meters seem to max out when you've collected about 25,000 of the given resource. However, I've been able to continue collecting those resources far beyond the point of maxing out the meters - I currently have well over 50,000 Palladium.
So far, I haven't noticed any adverse effects of "overstocking" on resources like this. Is there something I'm missing, or do these meters really serve no purpose aside from simple UI fluff?