Hom ntawm qhov muag: nta, lub hom phiaj

Kuaj khob iav yog yus muaj los ntawm ntau haiv neeg. Nws yog siv nyob rau hauv tus txheej txheem ntawm kev ntsuam xyuas nyob rau hauv ntau yam teb. Feem tooj ntawm variations hais tso cai rau kev siv ntawm ntim rau hauv txhua rooj plaub tsim nyog tshaj hom.

можно классифицировать по некоторым признакам. Uas twb muaj lawm hom qhov muag yuav txwv kom muab zais nyob rau hauv ib co respects. Qhov no tso cai rau koj mus delve ntxaum mus rau hauv lawv cov kev siv thiab tseem ceeb rau tus tsom xam. Ntau hom kuaj glassware tsim nyog tshwj xeeb mloog.

General yam ntxwv

. Nyob rau hauv laboratory xeem siv feem ntau iav flasks. Lawv cia koj mus ua ntau ntau ua hauj lwm thiab tshuaj haum. Txaus loj yam khoom ntawm siv tej yam uas kuaj yog cia li ntim.

Txij li thaum feem ntau ntawm cov flasks no yog ua los ntawm cov iav, lawv yuav tsum tau tuav. Niaj hnub no, muaj ntau yam ntawm hom ntawm qhov muag teev. Tej zaum lawv yuav tsum tau raug mus ua cua sov, los yog tshuaj reagents. Yog li ntawd, cov khoom los ntawm qhov uas ua khob iav, muaj los mas xws loads.

Configuration flasks yuav ua tau txawv heev. Nws yog tsim nyog los ua kev cai ib tug tag nrho cov tshuaj thwmsim, raws li zoo raws li tus tsom xam ntawm qhov yuav tsum tau cov ntaub ntawv. Feem ntau cov feem ntau, xws ntim muaj ib tug dav puag thiab nqaim caj dab. Ib txhia ntawm lawv muaj peev xwm ntsuas nrog ib tug plug.

ntau yam ntawm cov duab

. Nyob rau hauv laboratory kev tshawb fawb yuav siv pav ca-bottomed thiab puag ncig hauv qab hwj. Qhov no yog feem ntau siv ntau yam ntawm daim ntawv Tuition Waiver. Pav ca-bottomed ntau ntau yam yuav muab tso rau ib tug ca saum npoo. Lawv lub hom phiaj yog heev ntau haiv neeg.

Round hauv qab flasks yog muaj nyob rau lub kos. Qhov no yog heev ke hais tias koj xav kom ua cua sov rau hauv lub thawv. Nyob rau hauv nqa tawm ib co ntawm lub tshua nws speeds cov txheej txheem. Yog li ntawd, puag ncig hauv qab hwj yog feem ntau ua los ntawm kev siv ntawm no feature ntawm lub tshav kub-resistant iav.

Tsis tas li ntawd, ob leeg sawv cev los ntawm cov tsiaj ntawm laboratory glassware siv rau cia ntawm ntau yam tshuaj. Tej zaum, nyob rau hauv tsis tshua muaj heev neeg mob thaum lub sij hawm kuaj tsom siv ostrodonnye ntau yam ntawm ntim.

Daim ntawv thov ntawm tus flasks thiab lawv configuration

очень разнообразны. Hom ntawm qhov muag thiab lawv cov npe yog heev ntau haiv neeg. Lawv nyob ntawm seb daim ntawv thov. Kjeldahl hwj yog yus muaj los ntawm ib tug txiv moj coos-zoo li tus. Nws yog feem ntau siv nyob rau hauv tib lub ntsuas rau qhov kev txiav txim ntawm nitrogen. Qhov no teeb tej zaum yuav muaj ib tug iav stopper.

Rau distillation ntawm ntau yam tshuaj siv Wurtz hwj. ceg raj yog tam sim no nyob rau hauv nws cov qauv.

Claisen hwj muaj ob dos, uas yog tib yam kab uas hla thoob plaws nws ntev. Yuav kom ib tug ntawm lawv pub yeeb nkab, npaj rau diverting chav. Tus lwm yam kawg qhia cov tais diav nrog ib tug fridge. Cov hom yog siv rau cov distillation thiab distillation nyob rau hauv ib txwm siab.

Bunsen teeb siv nyob rau hauv pom dab. Nws cov phab ntsa yog muaj zog heev thiab tuab. Thaum lub saum toj muaj ib tug tshwj xeeb txoj kev. Nws mus hauv lub tshuab nqus tsev kab. Rau lub thwmsim nyob rau hauv uas tsis muaj-siab tej yam kev mob, qhov no hom yog zoo tagnrho.

Erlenmeyer hwj

нельзя не уделить внимание еще одной форме лабораторной посуды. Xav uas twb muaj lawm hom qhov muag, nws yog tsis yooj yim sua tsis them sai sai mus rau lwm daim ntawv ntawm laboratory glassware. Lub npe ntawm cov hlab yog muab nyob rau hauv Honor ntawm nws tus tsim - German chemist Erlenmeyer. Qhov no conical thawv, uas muaj ib tug ca hauv qab. Nws lub qhov ncauj yog yus muaj los ntawm ib tug cylindrical zoo.

Qhov no teeb muaj ib tug division, uas tso cai rau los mus txiav txim qhov ntim hauv cov kua. Ib cim feature ntawm no version ntawm lub thawv yog ua los ntawm ib tug tshwj xeeb iav insert. Nws yog ib yam ntawm cov phau ntawv. Nws chemist yuav ua rau cov tsim nyog sau ntawv.

Dhos thaiv lawm hauv spout yuav raug kaw, yog hais tias tsim nyog. Lub conical zoo txhawb nws zoo cov ntsiab lus. Vos caj dab pub pouring tshuaj. Lub evaporation txheej txheem nyob rau hauv xws li ib tug ntim qeeb qeeb.

Hwj sawv cev uas siv thaum lub sij hawm titration loj hlob ntshiab haiv neeg los yog cua sov. Yog hais tias lub noob muaj ib tug faib mus rau hauv tsev, lawv yuav tsis rhuab. Tej tais diav yuav ntsuas tus nqi ntawm cov tshuaj yeeb dej caw cov ntsiab lus.

Ib tug ob peb yam ntxwv

Ii hom qhov muag tej zaum kuj yuav muab faib ua tej pawg nyob rau hauv lub hom caj dab. Lawv yog cov yooj yooj yim (nyob rau hauv cov roj hmab stopper) raws li nrog ib tug cylindrical los yog conical av ob leeg.

Nyob ntawm seb lub hom ntawm cov khoom los ntawm qhov uas cov tableware yog manufactured, nws yuav ua tau thermally los yog li ib txwm. By lub sij hawm ntawm lub hwj yuav tsum tau muab faib mus rau hauv ntsuas tso tsheb hlau luam, receivers thiab reactors.

Los ntawm volume kuaj glassware yog tseem heev ntau haiv neeg. Lawv muaj peev xwm yuav txawv los ntawm 100 ml rau 10 liv. Muaj txawm loj ntim ntawm lub hwj. Thaum ua hauj lwm nrog xws li ib lub taub ntim yuav tsum nco ntsoov ua raws li kev ruaj ntseg cov kev cai. Txhua ntau yam ntawm cov khoom no yuav tsum tau siv nruj me ntsis rau nws npaj lub hom phiaj. Txwv tsis pub, koj muaj peev xwm ua txhaum lub hwj los yog ua mob rau koj lub cev.