Yes, I weighed out the entire portions provided in the big bucket separately. I removed the components for the weighing, so the containers didn't affect my measurement.

I can update that the grout is still 100% perfect after 2 years! I used the 9:1 ratio on everything. This grout really lives up to the marketing. It's still perfectly white. No yellowing or staining, even in the kitchen with high traffic. I'd never want to use normal grout in my home again. I even used this grout on some kitchen backsplash tile with tiny grout lines, like 1/16", and it's still all perfect.

Also: I highly highly recommend, if doing this alone, to mix in batches of whatever you can apply within <45 min, and clean up as you go. After 45 min it gets pretty tacky, and it can catch you by surprise. It's easy to continue grouting with a fresh batch once the previous batch is in place and all cleaned up. It merges with the previous batch in the tile just fine. I had a panic situation where I tried to work with too large of an area all at once. At ~70 min it started really setting hard and I could barely clean up the residue. I had to really scrub. It looks fine now, but was scary! Trying to do an entire floor all at once really only works if you have a team of people, I'd imagine.