Choletsa mkuwa kapena choletsa mkuwa ndi chowonjezera chogwira ntchito chomwe chimagwiritsidwa ntchito mu zinthu za polima monga mapulasitiki ndi rabala. Ntchito yake yayikulu ndikuletsa mphamvu yokalamba ya ma ayoni a mkuwa kapena mkuwa pa zinthu, kupewa kuwonongeka kwa zinthu, kusintha mtundu, kapena kuwonongeka kwa katundu wamakina chifukwa cha kukhudzana ndi mkuwa. Ndikofunikira kwambiri m'minda monga waya, chingwe cha chingwe, zida zamagetsi zopakira, ndi zina zotero.

Mkuwa ndi zitsulo zake (monga mawaya) zimagwiritsidwa ntchito kwambiri potumiza mphamvu, koma mkuwa ukakhudzana mwachindunji ndi zinthu zina za polima (monga PVC, polyethylene), ungayambitse mavuto awa:

Kusungunuka kwa okosijeni:
Cu2+ ndi chothandizira champhamvu cha okosijeni chomwe chimafulumizitsa kusweka kwa okosijeni kwa maunyolo a mamolekyu a polima, makamaka m'malo otentha kwambiri komanso chinyezi.

asidi dzimbiri:
Mu zinthu zopangidwa ndi halogen monga PVC, mkuwa ukhoza kuchitapo kanthu ndi HCl yowola kuti upange copper chloride (CuCl2), zomwe zimapangitsa kuti zinthu ziwole mwachangu (self catalytic effect).

Kuwonongeka kwa mawonekedwe:
Kusamuka kwa ma ayoni a mkuwa kungayambitse madontho obiriwira kapena akuda (dzimbiri la mkuwa) kuonekera pamwamba pa chinthucho, zomwe zimakhudza mawonekedwe ake.

Njira yogwirira ntchito ya deactivator
Zoletsa mphamvu zimaletsa zotsatira zoyipa za mkuwa kudzera m'njira zotsatirazi:

Ma ayoni amkuwa opangidwa ndi chitsulo:
Pophatikizidwa ndi Cu2+ yaulere, ma complexes okhazikika amapangidwa kuti alepheretse ntchito yawo yothandiza (monga mankhwala a benzotriazole).

Kudutsa pamwamba pa mkuwa:
Pangani filimu yoteteza pamwamba pa mkuwa kuti mupewe kutulutsa ma ayoni amkuwa (monga mankhwala a phosphorous achilengedwe).

Zinthu zoletsa acidity:
Mu PVC, zinthu zina zoletsa ntchito zimatha kuletsa HCl yomwe imapangidwa ndi kuwonongeka, zomwe zimachepetsa dzimbiri la mkuwa (monga zinthu zokhazikika zamchere wa lead zomwe zimakhalanso ndi ntchito yolimbana ndi mkuwa).

Zoletsa Mkuwandi mtundu wa "Invisible Guardian" mu zinthu za polima zomwe zimawonjezera kwambiri moyo wa ntchito ya zinthu monga ziwiya za waya poletsa ntchito yothandizira ya mkuwa. Chiyambi cha ukadaulo wake chili mu chelation yeniyeni ya mankhwala ndi kusuntha kwa pamwamba, pomwe ikulinganiza ubwino wa chilengedwe ndi kugwiritsa ntchito ndalama moyenera. Pakupanga chivundikiro cha waya, njira yolumikizirana yazoletsa ntchito, choletsa motondi zowonjezera zina ndizofunikira kwambiri kuti zinthu zikhale zodalirika kwa nthawi yayitali.