water has a weight/volume of about 1/1.
If you put eq in water it will sink, so it has to be more than 1 to 1. If you want it to be close enough then ya you can do it that way, But if your making a lot or want to know how much your actually using, its 1.18g/ml roughly. Basskiller is close enough for most guys, and his calc is great,, but your talking being almost 12% under dosed doing,, doing that to yourself doesn't make any sense.
I would much rather use 12ml of EQ to account for loss along the way, then your going to end up with a much more accurately dosed product. Rather than starting with an under dosed 10ml, ending with something that is more than like going to be 15-17% under dosed.