Ntev mus, daim ntawv dhau los ua xim av thiab daj. Cov kws tshawb fawb hais qhov tseeb ntawm cov hlau cov ntsiab lus hauv nws, uas yog oxidized. Nws yog ib qho tseem ceeb yuav tsum tau ceev faj thaum tshuaj dawb daim ntawv thiaj li tsis ua rau nws puas tsuaj thiab pleev xim rau.
Nws yog qhov tsim nyog
- - paj rwb pas rwb mus tub;
- - hydrogen peroxide;
- - ntxhuav plaub hau txhuam;
- - magnesium carbonate;
- - dej;
- - blotting ntawv;
- - yees duab cuvette.
Cov Lus Qhia
Kauj ruam 1
Ua ntej ua cov tshuaj dawb, xyuas cov kav ntev ntawm cov xim pleev xim rau daim ntawv thiab kev haum ntawm xaiv cov tshuaj dawb. Txhawm rau ua qhov no, ntsaws ib qho paj rwb ntaws hauv nws thiab moisten feem ntau qhov tsis tseem ceeb rau ntawm daim ntawv. Cia cov tshuaj qhuav. Yog tias cov xim tsis muaj paug, cov tshuaj dawb no yuav ua haujlwm zoo. Txwv tsis pub, qhov cuab yeej no yuav tsum tau muab pov tseg.
Kauj ruam 2
Ua ntej tshuaj dawb, tshem tawm cov acids uas tuaj yeem ua rau daim ntawv. Npaj ib qho kev daws teeb meem los ntawm kev noj 30 ml ntawm lub teeb magnesium carbonate ib liv ntawm dej qab zib kom tau txais bicarbonate. Ncuav cov tshuaj rau hauv lub raj mis thiab, co zoo, tawm rau ob peb feeb. Tos kom txog rau thaum pom lub ntsej muag dawb pib tsim rau hauv qab ntawm lub raj mis. Tom qab ntawd, maj mam muab cov dej carbonated rau hauv lub ntsuas pov tseg thiab ntxiv tus nqi ntawm cov kais dej dawb rau nws.
Kauj ruam 3
Tso daim ntawv ntsej muag rau ntawm daim ntawv huv uas ntxig. Siv ib txheej ntawm kev daws rau tom qab ntawv. Txhawm rau ua qhov no, siv lub taub ntim tshuaj tsuag lossis lub ntsej muag muag muag. Cia kom qhuav.
Kauj ruam 4
Noj ib feem ntawm cov tshuaj hydrogen peroxide thiab ob qho ntawm cov calcium carbonate thiab sib xyaw kom huv si. Ncuav txoj kev daws teeb meem rau hauv daim duab thaij thiab muab daim ntawv tso rau ntawm daim ntawv txhawb nqa thiab muab tso rau hauv cov kua. Khaws daim ntawv tso rau hauv kev daws kom txog thaum koj tau txais qhov txiaj ntsig yam xav tau.
Kauj ruam 5
Maj mam, ntawm daim ntaub uas txhawb nqa, tshem daim ntawv los ntawm cov kab xev thiab hloov mus rau daim ntawv uas huv huv. Muab cov paj rwb ntog mus rau hauv cov tshuaj tiv thaiv kua qaub thiab siv rau qhov chaw uas tsis paub tseeb. Qhov no yog kuaj xyuas yog tias daim ntawv bleached yuav saib xyuas qhov zas liab lossis xiav.
Kauj Ruam 6
Yog tias cov xim tsis txawv txav, tsuas yog yaug cov ntawv hauv dej huv. Hloov dej ntau zaus yog tsim nyog. Kev yaug yaug tawm yuav tshem cov tshuaj lom neeg pov tseg uas tuaj yeem rhuav tshem tau yav tom ntej. Yog tias cov xim tsis tau hloov, kho cov ntawv no nrog tshuaj tiv thaiv acid, thov nws nrog cov ntxhuav plaub hau mos muag los yog nrog lub taub ntim tshuaj tsuag.
