Nyob rau hauv kev lag luam teb, lub luag haujlwm ntawm cov ntsaws ruaj ruaj tsis tuaj yeem ua haujlwm rau cov khoom siv qub los txiav txim siab thaum ua cov khoom xaiv {{4}
Ua ntej, xov xwm sib xyaw yog qhov kev txiav txim siab thawj zaug muaj cov khoom siv roj hmab ntau zaus, nws tseem ceeb thiab xaiv cov khoom siv uas tuaj yeem tiv thaiv cov corrosion ntawm nruab nrab rau lub sijhawm ntev .
Qhov thib ob, qhov kub thiab cov kev ntsuas kub kuj tseem ceeb rau cov khoom siv hluav taws xob zoo li cov khoom siv roj hmab thiab cov khoom siv hluav taws xob muaj zog thiab cov khoom siv tshuaj ntsuab zoo ib yam li cov tshuaj lom neeg thiab kev ua kom zoo dua qub, muaj zog rau cov tshuaj fluoride
Hnav Kuj Tseem Kuj yog qhov tseem ceeb uas tsis tuaj yeem tsis quav ntsej . Cov khoom siv sib txig tsis zoo los ntawm kev sib txhuam lub neej ntawm cov ntsaws ruaj ruaj ntawm cov ntsaws ruaj ruaj ntawm cov ntsaws ruaj ruaj ntawm cov ntsaws ruaj ruaj.
Tsis tas li ntawd, lub hardness, tawm tsam kev ua haujlwm, cov khoom siv ntawm cov khoom sib tw tau cuam tshuam nrog kev ruaj ntseg ntawm cov khoom siv sib luag hauv lub sijhawm ntev .
Ua ntej ua qhov kev txiav txim siab zaum kawg, nws yog qhov tsim nyog kom nkag siab txog cov ntaub ntawv kev ua kom zoo nkauj thiab cov ntaub ntawv muaj kev pab cuam zoo tib yam, txhawb nqa lub neej kev ua tau zoo thiab lub neej ntev tshaj plaws.