From tap water to LC/MS Grade Ultra-Pure water, CAS #7732-18-5 is the one chemical found in every lab.
From Type 1 to Type 4, your lab will most likely use them all.
In my 50+ years of experience in the lab distribution business, the one thing that still mystifies me is chemical pricing. Specifically, how is the list price set and why is bargaining still the only way to arrive at a competitive price