It's an asymmetric world

Thermodynamic acid dissociation constants of buffer substances (DB) and Universal Buffer Solution (text)

The amino acids database contains information about the 20 naturally occurring amino acids.

Tables of dissociation constants for acids (pKa) and bases (pKb), and solubility products for (almost) insoluble salts

This database contains some simple info on the elements of the Periodic Table: symbol, name, atomic number, weight, melting and boiling points, an (incomplete) field containing the family to which the element belongs, and an empty field for your note

List organized by type and by grade.

Techniques, terms, and miscellaneous words used in Iaido/Iaijutsu