Put PS fluid in the Brake Res, 2008 Mazda3 2.3 auto

[toyman57]

I mistakenly put about an ounce of power steering fluid into the brake res. I removed all the fluid that I could get out of the res and refilled with dot3 twice. I looks like the top part of the brake res is seperate from the main brake res? Since PS fluid will sit on top of brake fluid I believe 99% of the PS fluid has been removed. Any other suggestions?

Thanks