Hom iav twg yog feem ntau Laboratory Glassware ua los ntawm

Introduction:

Laboratory glassware yog ib feem tseem ceeb ntawm txhua qhov kev teeb tsa kev tshawb fawb, los ntawm cov tsev kawm ntawv qib siab labs mus rau cov chaw tshawb fawb txiav. Txawm hais tias koj ua haujlwm nrog beakers, flasks, test tubes, los yog cov burettes, kev nkag siab txog hom iav siv hauv cov khoom siv hauv chav kuaj tuaj yeem cuam tshuam qhov zoo ntawm koj qhov kev sim.

Tab sis dab tsi raws nraim yog hom iav feem ntau siv hauv Laboratory iav? Nyob rau hauv phau ntawv qhia no, peb mam li delve rau hauv cov ntaub ntawv uas ua rau feem ntau kuaj glassware, tsom rau lawv cov khoom, siv, thiab vim li cas lawv tseem ceeb. Yog tias koj tab tom nrhiav kev txhawb nqa koj lub chaw kuaj mob, kab lus no yuav muab tag nrho cov kev nkag siab tseem ceeb uas koj xav tau.

1. Kev Tshawb Fawb Txog Kev Tshawb Fawb Cov Khoom Siv iav

Laboratory glassware feem ntau yog tsim los ntawm cov iav tshwj xeeb uas muaj qhov sib npaug zoo ntawm lub zog, tshuaj tiv thaiv, thiab pom tseeb. Kev nkag siab qhov sib txawv ntawm cov ntaub ntawv no tuaj yeem ua rau lub ntiaj teb sib txawv thaum xaiv cov cuab yeej zoo rau koj qhov kev sim.

Borosilicate iav yog tus huab tais undisputed thaum nws los txog rau chav kuaj iav. Nws ua rau feem coob ntawm kev tshawb fawb iav vim nws cov khoom tshwj xeeb uas tso cai rau nws los tswj cov kev ntxhov siab thermal thiab tshuaj lom neeg. Lub npe nrov tshaj plaws ntawm borosilicate iav yog Pyrex, uas yog siv dav hauv ob qho tib si kev kawm thiab kev lag luam hauv chaw soj nstuam.

Rau lwm cov tes, Dej qab zib-txiv qaub iav, txawm tias tsawg dua hauv cov chaw ua haujlwm siab, kuj tau siv dav hauv qee qhov kev siv. Nws tsis tiv taus qhov kub thiab txias thiab tshuaj lom neeg piv rau borosilicate tab sis pheej yig dua thiab tsim nyog rau kev siv hauv chav kuaj.

2. Vim li cas Borosilicate iav yog qhov kev xaiv

Borosilicate iav yog tsim los ntawm kev sib txuas ntawm silica thiab boron trioxide, uas muab nws cov kos npe ruaj khov thiab ua haujlwm. Cov khoom no yog heev nyiam rau nws:

Cov yam ntxwv tseem ceeb ntawm Borosilicate iav:

1. Thermal Shock Resistance: Borosilicate iav muaj cov coefficient tsawg ntawm thermal expansion, txhais tau tias nws tuaj yeem tswj cov kub hloov pauv sai yam tsis muaj tawg lossis tawg. Qhov no ua rau nws zoo tagnrho rau cov ntawv thov xws li cov phaj kub ua haujlwm, autoclaving, thiab hluav taws xob hluav taws xob ncaj qha.
2. Tshuaj tiv thaiv: Cov tshuaj muaj pes tsawg leeg ntawm borosilicate iav muab nws superior tsis kam mus rau acids, bases, thiab ntau yam ntawm cov kuab tshuaj feem ntau siv nyob rau hauv lub chaw soj nstuam. Qhov no ua kom muaj kev ncaj ncees ntawm kev sim thiab txo qhov kev pheej hmoo ntawm kev sib kis.
3. durability: Borosilicate iav zoo kawg nkaus muaj zog thiab tiv taus cov neeg kho tshuab kev ntxhov siab, txo qhov kev pheej hmoo ntawm kev sib tsoo thaum txhua hnub tuav thiab siv.
4. Transparency: Borosilicate iav tuav tshwj xeeb clarity, tso cai rau kom pom tseeb thiab saib xyuas yooj yim ntawm kev sim thiab cov txheej txheem.

3. Soda-Lime iav hauv daim ntawv thov Lab

Thaum borosilicate iav siv lub tsom teeb ntawm kev ua haujlwm, dej qab zib-lime iav tseem yog feem ntau siv rau cov ntawv siv hauv chav sim. Soda-lime iav yog tsim los ntawm kev sib xyaw silica nrog sodium oxide thiab calcium oxide, thiab nws yog hom iav uas pheej yig tshaj plaws muaj rau cov khoom siv niaj hnub xws li ntim thiab cov khoom siv iav.

Txawm hais tias dej qab zib-txiv qaub iav tsis muaj cua sov thiab tshuaj tiv thaiv ntawm borosilicate iav, nws lub zog ua rau nws yog ib qho kev xaiv zoo rau cov xwm txheej uas tsis xav tau siab precision. Nws kuj tseem yooj yim rau cov duab thiab pwm, ua rau nws mus rau kev xaiv rau cov khoom tsim tawm, pheej yig labware.

4. Cov hom kev kuaj iav iav thiab lawv cov khoom siv

Cia peb rhuav tshem hom iav siv hauv cov khoom siv hauv chav kuaj:

• Beakers: Feem ntau yog ua los ntawm borosilicate iav kom tiv taus cua sov thiab tshuaj lom neeg.
• Flasks (Erlenmeyer, Round-hauv qab): Cov no feem ntau yog borosilicate vim lawv xav tau los tswj qhov kub thiab txias hloov thaum sib tov lossis cua sov.
• Kuaj hlab: Feem ntau cov raj kuaj yog tsim los ntawm borosilicate iav, txawm hais tias qee qhov yuav ua los ntawm cov dej qab zib-kua txiv iav rau kev xav tau tsawg dua.
• Burettes thiab Pipettes: Cov cuab yeej precision no yog ua los ntawm borosilicate iav rau lawv qhov tseeb thiab tsis kam mus rau tshuaj lom neeg sib cuam tshuam.
• Petri Tais: Cov no feem ntau yog ua los ntawm cov dej qab zib-txiv qaub iav vim lawv tsis tas yuav tsum tau ua kom sov siab heev uas lwm cov khoom siv labware ua.

5. Cov iav iav nrog cov txheej los yog cov khoom ntxiv

Qee qhov chaw kuaj iav iav yuav muaj cov txheej tshwj xeeb lossis cov khoom ntxiv los txhim kho lawv cov khoom. Piv txwv li, Pyrex iav tuaj yeem coated nrog lub ntsej muag uas tsis yog-stick los tiv thaiv cov tshuaj residue buildup. Ntxiv thiab, fused silica yog siv nyob rau hauv advanced scientific daim ntaub ntawv qhov twg ultra-high purity yuav tsum tau.

Cov lus nug nquag nug txog Laboratory Glassware

Q: Cov iav borosilicate puas tuaj yeem siv rau hauv lub microwave?

A: Yog, borosilicate iav yog microwave-zoo vim nws tsis tshua muaj thermal expansion thiab tsis kam rau thermal shock. Qhov no ua rau nws haum rau cua sov thiab rov ua cov qauv hauv chav kuaj.

Q: Yuav ua li cas borosilicate iav piv rau quartz iav nyob rau hauv cov nqe lus ntawm tshav kub tsis kam?

A: Txawm hais tias ob qho tib si borosilicate thiab quartz iav muaj qhov kub-tiv taus, quartz iav tuaj yeem tiv taus qhov kub thiab txias, ua rau nws xaiv qhov kev xaiv tshwj xeeb xws li cov cua kub kub thiab qhov cub.

Q: borosilicate iav puas tuaj yeem autoclaved?

A: Yog lawm! Borosilicate iav yog ib qho khoom siv zoo tshaj plaws rau autoclaving vim nws muaj peev xwm tiv taus qhov kub thiab txias thiab kev kub ntxhov cuam tshuam nrog kev ua kom tsis muaj menyuam.

Q: Qhov txawv ntawm borosilicate iav thiab pyrex yog dab tsi?

A: Pyrex yog lub npe tshwj xeeb ntawm borosilicate iav uas tau pib tsim los ntawm Corning thaum ntxov xyoo pua 20th. Thaum Pyrex yog hom iav borosilicate, tsis yog txhua lub iav borosilicate yog Pyrex.

Q: Kuv tuaj yeem txheeb xyuas cov iav borosilicate hauv chav kuaj li cas?

A: Borosilicate iav feem ntau txheeb xyuas los ntawm nws qhov tshwj xeeb lub teeb-xiav tint lossis muaj "borosilicate" lossis "borosilicate" daim ntawv lo rau ntawm cov iav.