Staining of the Bath house floor

We were always planning to stain the cement floors in both the Bath house and shop. We figured this would be a good place to experiment to see if we liked it enough to use in the main house.
I first did a test run on some stepping stones we had made from the left over cement. I first cleaned the cement with simple green and rinsed them with a hose really well. After the blocks dried for a day, I sprayed on the stain using a non-metal spaying unit (the stain is very corrosive and will damage any metal, this action is what makes the cement turn a different color). I let the acid stain work for a few hours and then rinsed the cement really well with baking soda and water to make sure the acid was neutralized. There is no need to scrub just let the soda do its work.

I did learn that the stain will look lighter before you but on the sealer. So when the cement is wet, that is the way it will look when you apply the sealer.
So what I did was to apply a first coat of the stain, let it dry, wash it with water and saw if it is as dark as I wanted. I repeated this until the floor looked the way we had envisioned. By the way , don't trust the sample colors to turn out the same on your cement, there are to many factors. Take the time to get the little sample bottles they will let you have and do the test batches. We like one of the samples ,did the test patch and it turned out very different than the swatch, so beware!!!!
After I got the desired color , washed the cement real well and let it dry completely I applied the sealer. I first used a lambs wool pad, this was disastrous. The pad shed and fell apart. I then switched to a hand brush which work very well but was difficult on my back and knees. So on the shop slab I used a 1/4 " nap roller, which worked well until the edges started to fray, so I had to switch out the roller a few times.
It really turned out beautiful, we are very happy with the results!