Ungayikhetha njani i-vial vial vial ye-vial ye-solvent yakho?

Intsebenzo ephezulu ye-chromatography (i-HPPC) yindlela ebalulekileyo yokuhlalutya esetyenziswa kwimimandla eyahlukeneyo efana namayeza, uhlalutyo lokusingqongileyo, kunye nokhuseleko lokutya. Inxalenye ephambili yenkqubo ye-HPLC yi-vial septum, esebenza njengokuvalwa kwe-vial. I-vial septum livarsure evaliweyo yokuvula i-Vika, ivumela ukungena kwinaliti ngelixa ugcina itywina elikhuselekileyo ukuthintela ungcoliseko kunye nokuphuma kwamanzi. Kuya kufuneka bahambelane nesinyibilikisi behlalutyo kwaye kufuneka bakwazi ukumela iimeko zenkqubo ye-HLLC.

Ukubaluleka kokukhetha i-septa elungileyo

Ukukhetha i-septum elungileyo kubalulekile:

Ukuthintela ungcoliseko: Izinto ezingahambelaniyo zinokubona kwisampulu okanye ziphendule ngesinyibilikisi.

Ukuqinisekisa itywina elifanelekileyo: Itywina elilungileyo lithintela ilahleko kunye nokugcina ingqibelelo.

Ukuququzelela inaliti ezininzi: Ezinye zeSepta zenzelwe ukuba ziphinde ziphinde ziphinde zenzeke.

Ufuna ukwazi ulwazi olupheleleyo malunga ne-ptfe \ / isilicone Septa, nceda ujonge eli nqaku: Yonke into oyifunayo

Iindidi ze-HPLC

Izinto ezahlukeneyo zinepropathi eyahlukeneyo echaphazela intsebenzo yabo kwizicelo ze-HLPC. Oku kulandelayo zizixhobo eziqhelekileyo ezisetyenziswa kwi-HPPC ye-vial vial vial septa:

I-1. Ptfe (Polytetraflum)

Amanqaku: I-PTFE inomchasi ogqwesileyo yekhemikhali, iyonke kwaye inokumelana neenyikima.

Ukusetyenziswa: akulunganga kwiinaliti ezininzi okanye ukugcinwa kwexesha elide ngenxa yokungakwazi kwalo kukhala emva kokuba kugwetywa, kuyenza ilungele ukusetyenziswa kosetyenziso olunye.

Ukunganyangeki kobushushu obuphezulu: Ukunyuka kwamaqondo obushushu ukuya kwi-260 ° C.

Ixabiso: Uqoqosho ngokubanzi xa kuthelekiswa nezinye izinto.

I-2. Ptfe \ / isiliki septa

Iimpawu: idibanisa ukunganyangeki kwekhemikhali kwe-ptfe kunye nokufumana i-silicone.

IISEBENZISIWEYO: Kucetyiswa ukuba inaliti ezininzi kunye nokugcinwa kwesampulu ngenxa yokufakwa kwayo ngokugqibeleleyo.

Uluhlu lobushushu: Isebenza ngo-40 ° C ukuya kwi-200 ° C.

I-Autockeve: Ilungele iinkqubo zokusetyenziswa.

I-3. Ukusika ptfe \ / isiliki septa

Iimpawu: Yenzelwe ukunciphisa ukulungisa xa usebenzisa iinaliti ezixineneyo; Ukunciphisa ukwenziwa kwee-vacuum kwi-vials.

IISEBENZO: Ifanelekile kwizicelo apho kufuneka rhoqo unxibelelwano oluqhubekayo ngaphandle kokulalanisa.

Uluhlu lobushushu: olufanayo kwi-ptfe \ / Sililicone, -4 ° C ukuya kwi-200 ° C.

I-4. I-Butyl Ruber

Iipropathi: Iipropathi ezilungileyo zokutywina, kodwa ukuxhathisa imichiza encinci xa kuthelekiswa nePTFE.

IISEBENZISA: Ifanelekile kwizisombululo ze-ACHEAGOOGOAGOAG kunye nezinyibilikisi ezingaphantsi; inokusetyenziswa kwizicelo ezifuna itywina lomoya.

Ukunganyangeki kobushushu obuphezulu: Kuhle kumaqondo obushushu asezantsi, kodwa unokudelela amaqondo obushushu aphezulu okanye anoburharha.

5. Viton

Iipropathi: Ukungaxhathisi kakhulu kwiikhemikhali zobundlobongela kwaye ugcine amandla okuphindeka emva kokufika.

IISEBENZISA: Ithathelwe ingqalelo indawo yokugqibela ngenxa yeendleko eziphezulu; Ilungele izicelo apho ezinye izinto zingaphumelelanga.

Ukunganyangeki kobushushu obuphezulu: Isebenza ngamaqondo obushushu aphezulu, kodwa ifuna ukuphatha ngononophelo ngenxa yokuqina kwayo.

Izinto ekufuneka ziqwalaselwe xa ukhetha i-HLPC ye-vial sepga

1. Ukuhambelana kwamachili

Into yokuqala ekufuneka uyiqwalasele kukungqinelana nemichiza yezinto ze-septum kunye nezinyibilikisi oceba ukuzisebenzisa. Izinto ezahlukeneyo zinokwazi ukwahluka kwiikhemikhali:

I-ptfe (i-polytetrafluoroothyyyyyyyyyyyyyeyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyctuone) Ihlala isetyenziswa ngokudibeneyo nezinye izinto.

I-Silicone: I-Silicone Septa iyaguquguquka kwaye inokuchithwa emva kokungena kwinaliti, ibenza babe nenkcaso ephindaphindiweyo. Nangona kunjalo, basenokungahambelani nazo zonke izinyibisi.

I-Butyl Ruber: Olu phawu lunezinto ezilungileyo zokutywina, kodwa zinokuchasa imichiza encinci xa kuthelekiswa nePTFE.

I-ptfe \ / i-Silicone Extite: idibanisa izibonelelo zomibini izixhobo, ngokuhambelana kakuhle nemichiza kunye nokaziphindabala.

2. Uhlobo lwesinyibilikisiweyo

Uhlobo lwe-solvent esetyenzisiweyo luya kuphembelela ukhetho lweSeptum:

Izisombululo ze-ACTEACT: IZIXHOBO ZAMANZI, I-Silicone okanye i-ptfe \ / isiliki sePTA ichithwayo ngenxa yokungqinelana.

Izinyibilikisi ze-organic: iinyibiliki ezifana ne-methanol okanye i-acetonitrile, i-Acetonitrile, i-ptfe okanye i-ptfe okanye i-ptfe okanye i-ptfe okanye i-ptfe \ / i-Silicone ithandelwe ngenxa yokungavisisani kwemichiza.

Iikhemikhali eziNgeyo

I-3. Umsebenzi wokutywina

Isakhono se-septum siye kwi-septing emva kokufika kwenaliti sibalulekile ekugcineni ingqibelelo yesampulu:

I-SLIT VS. Uyilo olungafunekiyo: Ezinye ze-Septa zine-stit ukwenza lula ukufakwa kwenaliti, kodwa oku kunokuchaphazela itywina ngokuhamba kwexesha. Uyilo olungafunekiyo lubonelela ngetywina elinzima kodwa unokufuna amandla amaninzi xa ulahle.

I-PABALD: Khangela iSepta enokuthi iphinde iphinde iphinde iphinde iphinde ifakwe iinzwane ezininzi zenaliti ukukhusela ungcoliseko kunye nokuphuma.

Ngaba ufuna ukwazi ukuba ukhetha i-septa kwi-pre-slit okanye hayi? Nceda ujonge eli nqaku: Ungayikhetha njani i-Septa Pal-Slit okanye hayi?

I-4. I-Excekeces kwaye iqhina

Xa usebenza neesampulu ezibuthathaka, kubalulekile ukuthathelwa ingqalelo kwaye ungene ngenyathela kwizinto zeSeptum:

I-SEP ESTEDICS: Khetha i-Septa enezicatshulwa eziphantsi ukuze unciphise umngcipheko wongcoliseko. I-PTFO ineempawu eziphantsi ezikhutshiweyo xa kuthelekiswa nezinto ezisekwe kwirabha.

Imigangatho yovavanyo: Abanye abavelisi babonelela ngedatha ekufumaneni izityholo; Hlaziya ezi ngcaciso xa ukhetha i-septum.

5. Ukuxhathisa ubushushu obuphezulu

Cinga ngoluhlu lwamaqondo obushushu apho inkqubo yakho ye-HPPC iya kusebenza khona:

Ubushushu obuphezulu: Ukuba isicelo sakho sibandakanya ubushushu obuphakamileyo, qinisekisa ukuba izinto zeSeptum zinokumelana nale mibandela ngaphandle kokuthambisa.

Izicelo ze-Crygesic:

I-6. Iipropathi zomzimba

Iimpawu zomzimba zeSeptum zinokuchaphazela ukusebenza:

Ubunzima: I-Septar Septa inokubonelela ngetywina elingcono kodwa linokufuna amandla amaninzi ngexesha lokungena kwenaliti.

Ubunzima: Izixhobo zesobe zinokubonelela ngokufana okungcono kodwa kunokuba sinomdla ngakumbi kumonakalo ngexesha lokusetyenziswa okuphindiweyo.

Selecting the right HPLC vial septum requires careful consideration of solvent compatibility, sealing capabilities, high temperature resistance, and specific analytical needs. Ngokuqonda iipropathi zezinto ezahlukeneyo kunye nezicelo zabo, abaphandi banokuphucula kakhulu ukuchaneka nokunyaniseka kohlalutyo lwe-HPLC. Ukhetho olufanelekileyo alukho nje ukuphucula ukusebenza, kodwa lunciphisa umngcipheko onxulunyaniswa nesampulu yonakalisa kunye nongcoliseko.