GCSE Chemistry > Haber Process. The Haber process is the process by which Ammonia is produced. Simply put, it involves combining Nitrogen and Hydrogen together as the second equation below shows. This is a reversible reaction. The nitrogen needed for the reaction comes from the fractional distillation of liquid air.
Sooner than later is a pretty new expression, picking up in the 1940s, though sooner or later is a much older and more common expression. As to its grammatical correctness; it is certainly idiomatic and idioms seem to be allowed a lot of latitude on the grammatical front.
This is a very low number, and will be reached as early as 6 days before your next period. First response Rapid Results will be positive on about the day you expect your period. But if you don't know the exact day your next period will start, this becomes the problem.