KH or alkalinity
Bounded definition
Hobby KH tests approximate acid-neutralizing capacity, commonly expressed as carbonate hardness.
Do not infer more: The result is not a direct inventory of carbonate species and is not interchangeable with pH.
Wording people may use
kh, alkalinity, carbonate hardness, buffering.
Use the term in context
Continue with parameter guide, measurement-quality guide. The glossary standardizes wording; the linked guide carries the practical method, evidence and decision boundary.
Editorial definition reviewed 2026-08-12. It adds no diagnosis, universal care target or new biological evidence. Challenge this wording or provide a source.