Cov khoom siv hluav taws xob cov khoom siv hluav taws xob tau siv los kuaj cov tshuaj pleev roj ions, sodium ions, ionized calcium thiab lithium ions los ntawm cov qauv. Cov qauv yuav tuaj yeem tuaj yeem tag nrho cov ntshav, ntshav qab zib, ntshav, zis, ua kom dej thiab dej. Nws yog cov khoom tseem ceeb hauv chav kuaj.