Yuav ua li cas kom tshem tawm tus cwj mem ntawm ntawv?

Cov neeg pej xeem muaj tswv yim hais tias: "Dab tsi yog sau nrog ib tug cwj mem, koj tsis tuaj yeem txiav ib txoj kab." Thiab yog hais tias nws yog ib lo lus nug ntawm ib qho kev tsim tseeb, ces tsis muaj cov lus nug. Txawm li cas los xij, yuav ua licas yog tias lub blob, uas raug muab tso nrog ib qho xo pob cwj mem los ntawm ib daim ntawv tseem ceeb lossis daim ntawv pov thawj, yuav ua rau kev ntseeg tsis tseeb ntawm qhov tseeb. Tom qab ntawd qhov teeb meem ntawm yuav ua li cas kom tshem tawm cov cwj mem los ntawm daim ntawv tsis zoo li tsis zoo li tsis zoo, tab sis nws kuj yuav tsum muaj ib qho kev tsim txiaj. Thiab qhov no tsis yog xav tsis thoob, vim hais tias tej yam muab tshuaj txhuam tau los ntawm tus kov hauv qhov chaw npaj txhij, muaj peev xwm yuav tsum tau noj mov sai li sai tau, mus tas li kom paub zoo. Tej zaum, qhov no, thaum xub thawj siab, ib qho kev saib xyuas tsis tau zoo yuav tsis daws, yog tias tsis yog rau ntau txoj kev zoo.

Txoj kev tshem cov cwj mem los ntawm daim ntawv

Qhov tseeb, cov hau kev ua kom tshem tau tus cwj mem los ntawm daim ntawv xov xwm nrog nws txoj kev simplicity thiab kev pom tseeb. Yog li, ntawm no yog qee yam ntawm lawv:

• tov ntawm glycerin thiab ethyl cawv nyob rau hauv sib npaug proportions;
• sov so rau mis nyuj los yog mis nyuj;
• 70% acetic concentrate nrog cov me me ntawm manganese.

Lub hauv paus ntsiab lus ntawm tag nrho cov kev sau tau muab txo rau lawv cov ntawv yooj yim mus rau qhov chaw qias, thiab tom qab luv luv npaum li cas, ntawm qhov kev txiav txim ntawm 3-5 feeb, qhov chaw ntawd poob rau hauv qhov muag.

Xav txog dab tsi ntxiv tuaj yeem muaj cwj mem kua, nws yog ib qho tseem ceeb rau cov ntsiab lus ob peb yam ntxiv. Yog li, cov qoob loo ntawm oxalic thiab citric acid, noj 10 gram txhua thiab tov rau hauv 100 milliliters dej, tau sai tshem tawm tsis tsuas yog blob los ntawm kev kov, tab sis kuj muaj pes tsawg, uas yog retarded los ntawm ib lub thwj thiab ib lub npe. Yog li, ua tsaug rau qhov kev txiav txim ntawm cov yeeb tshuaj no, nws yog ib qho ua kom tsis txhob muab cov inkblot.

Tshem tawm ntawm ib qho xaj los ntawm tej daim ntawv

Tsis tas li ntawd thaj chaw yog pleev xim rau hauv ib txwm xim dub, vim tias palette tuaj yeem sib txawv. Txawm li cas los xij, qhov teeb meem ntawm yuav tshem tawm cov xim ntawm xiav, violet, ntsuab, xim liab thiab lwm yam xim ntawm tus cwj pwm kuj tseem daws tau yooj yim. Piv txwv li, koj tuaj yeem siv txoj hauv qab no, uas yuav tsum tau tsim kom muaj ob lub tebchaw. Los npaj thawj, koj yuav tsum tau 50 ml ntawm cov dej hauv chav tsev, uas nyob rau hauv lem yog ntxiv nyob rau hauv me me ntawm poov tshuaj permanganate. Tom qab qhov nyiaj manganese tiav lawm thiab nws qhov xaus tsis tas li, 50 ml ntawm pre-txias acetic acid yuav tsum muab ntxiv rau qhov sib xyaw kom haum. Vim lub fact tias cov nyhuv ntawm no muaj pes tsawg leeg tsis ntev, ib tug yuav tsum tau pib tam sim ntawv thov rau cov stained nto. Raws li kev sib tov ob, nws cov ntsiab lus muaj xws li 100 ml ntawm dej sov thiab yaj nyob rau hauv nws ob lub ntsiav tshuaj ntawm hydroperite. Tom qab tag nrho cov kev npaj, koj yuav tsum xub ua ntej los ntawm txoj kev hnav, tsis rubbing, kis thawj zaug sib xyaw ua rau ntawm lub cev, thiab tom qab ntawd ob peb feeb, discolour qhov chaw nrog ob qho tib si.

Thaum nyob hauv tsev me nyuam yau thiab lawv tus neeg paub thawj zaug nrog lub ntiaj teb ntawm kev thaij duab pib nrog cov ce hauv cov phab ntsa, niam txiv feem ntau txhawj xeeb txog qhov teeb meem ntawm kev tshem tawm cov cwj mem los ntawm phab ntsa . Tsis nrhiav ib txoj kev zoo, lawv qee zaum daws tau rau kev ntsuas, kev kho , tab sis ib qho ntawm cov qauv saum toj no yuav ua tau zoo rau qhov teeb meem no.

Yog li, ib tug variation ntawm daim ntawv saum npoo thiab lub feem ntawm kov yog tsis tseem ceeb. Yog li, peb tau yooj yim daws cov teeb meem ntawm yuav tshem tawm cov lej qab zauv. Nws raug nquahu kom tsis txhob cia lub caij tawm qhuav thiab yuav luag tam sim ntawd kom kho thaj chaw nrog ib tus sov sov. Ua li no, koj yuav tsum tau muab cov ntaub ntawv mos muag, tso ib daim ntawv dawb rau ntawm nws, thiab twb txog ntawm qhov no tsis muaj qhov tawm ntawm sab nraud. Tom qab tag nrho cov kev npaj, koj yuav tsum tau hlau cov ntawv huv thiab lub voos yuav raug muab tshem tawm.