Yintoni abavavanyi bePocket PH?
Abavavanyi bepokotho ye-pH zizixhobo ezincinci eziphathwayo ezihambisa ulwazi kumsebenzisi ngokuchaneka, lula kunye nokufikeleleka. Ezi zixhobo ziyilelwe ukuba zisetyenziswe kwiimeko ezahlukeneyo kwaye ziya kuvavanya i-alkalinity (pH) kunye ne-asidi yeesampuli ezahlukeneyo. Ngokukodwa zithandwa kakhulu ukuvavanya iisampulu zomgangatho wamanzi kuba zingena ngokucocekileyo epokothweni ukuze zifumaneke lula kwaye zisetyenziswe.
Ngezicelo ezininzi ezahlukeneyo ezivelisa uluhlu lweentlobo zeesampulu, kubalulekile ukwazi ukuba loluphi uhlobo lovavanyo lwamanzi lwe-pH oluza kuvelisa ezona ziphumo zilungileyo kwiimfuno zakho zovavanyo lwesampulu. Kukho iintlobo ngeentlobo zabavavanyi kwimarike ezibonelela ngeentlobo ezahlukeneyo zobugcisa ukuzalisekisa iimfuno zabathengi. Kukho iindidi ezintathu zabavavanyi bamanzi be-pH abalungele ukuvavanya umgangatho wamanzi: i-electrode disposable tester ene-junction-junction, i-electrode enokuthathelwa indawo yi-single-junction kunye ne-electrode enokuphinda iphindwe kabini. Ukukhetha imitha ye-pH yamanzi kuya kuxhomekeka kakhulu kwisampulu evavanywayo, i-cadence yovavanyo kunye nokuchaneka okufunekayo.
Amaxabiso e-pH
Olona hlobo luqhelekileyo lovavanyo lomgangatho wamanzi luvavanyo lwe-pH. I-pH yamanzi ibonisa ibhalansi phakathi kwee-ion ze-hydrogen, ezine-acidic, kunye ne-hydroxide ions, ezisisiseko. Ibhalansi egqibeleleyo yezi zibini kwi-pH ye-7. Ixabiso le-pH le-7 lingathathi hlangothi. Njengoko inani lincipha, le mveliso iba neasidi ngakumbi; njengoko isanda, i-alkaline ngakumbi. Amanani avela kwi-0 (i-acidic ngokupheleleyo, njenge-asidi yebhetri) ukuya kwi-14 (i-alkaline ngokupheleleyo, umzekelo, i-drain cleaner). Amanzi etephu akholisa ukuba malunga ne-pH 7, ngelixa amanzi endalo ehlala ngokwesiqhelo akuluhlu lweeyunithi ze-pH ezi-6 ukuya kwisi-8. Izicelo ezifuna ukulinganisa amanqanaba e-pH zifumaneka malunga neshishini ngalinye kunye nekhaya. Ukusetyenziswa kwekhaya, okufana nokulinganisa amanqanaba e-pH kwi-aquarium yeentlanzi, yahlukile kumlinganiselo we-pH yamanzi kwindawo yokucocwa kwamanzi.
Ngaphambi kokuba ukhethe i-pocket tester, kubalulekile ukwazi ngakumbi malunga ne-electrode. Yinxalenye yokuhlola ipokotho efakwe kwisampulu ukuthatha umlinganiselo we-pH. Ngaphakathi kwe-electrode yi-electrolyte (ulwelo okanye ijeli). I-electrode junction yindawo ene-porous phakathi kwe-electrolyte kwi-electrode kunye nesampuli yakho. Ngokusisiseko, i-electrolyte kufuneka ivuze kwisampulu ukuze i-electrode isebenze ukufezekisa iziphumo ezichanekileyo. Zonke ezi ndawo zincinci zisebenza kunye ngaphakathi kwe-electrode ukulinganisa ngokuchanekileyo i-pH.
I-electrode iyancipha ngokukhawuleza ngenxa yokuba i-electrolyte isetyenziswa rhoqo xa ithatha imilinganiselo kwaye iba yityhefu ngokungcolisa i-ion okanye iikhompawundi. Iiyoni ezityhefa i-electrolyte zizinyithi, iiphosphates, iisulfates, iinitrate kunye neeproteni. I-caustic ngakumbi indawo, impembelelo enkulu kwi-electrode. Iimeko zeCaustic ezinamazinga aphezulu e-ion ezingcolisayo, ezifana neendawo zokucocwa kwamanzi amdaka, zinokukhawulezisa ubuthi be-electrolyte. Le nkqubo inokwenzeka ngokukhawuleza ngabavavanyi benqanaba lokungena elingabizi kakhulu. Kwiiveki nje ezimbalwa, iimitha zinokuba buthuntu kwaye ziguquguquke. I-pocket pH meter esemgangathweni iya kuxhotyiswa nge-electrode ethembekileyo enika ukufundwa okuzinzile nokuchanekileyo ngokuqhubekayo. Ukugcina i-electrode icocekile kwaye ifumile kwakhona kubalulekile ekusebenzeni komvavanyi wepokotho kunye nobomi obude.
I-Single-Junction Disposable pH Testers
Kumsebenzisi wamaxesha athile wabavavanyi be-pH abaneemfuno zesampulu zamanzi eziqhelekileyo ze-pH, itekhnoloji elula esebenzisa i-electrode ene-junction enye iya kubonelela ngamandla amaninzi kunye nokuchaneka. I-electrode yejunction enye inobude bobomi obufutshane kune-electrode edibanisa kabini kwaye iqhele ukusetyenziselwa indawo eyenzeka ngamaxesha athile i-pH kunye novavanyo lobushushu. I-sensor ye-single-junction engatshintshiyo ine-0.1 pH echanekileyo. Olu lukhetho lwezoqoqosho kwaye ngokuqhelekileyo luthengwa ngumsebenzisi ongaphantsi kobugcisa. Xa umvavanyi engasaboneleli ngokufunda ngokuchanekileyo, yilahle ngokulula kwaye uthenge omnye umvavanyi wepokotho. Abavavanyi abalahlwayo kwindawo enye bahlala besetyenziswa kwi-hydroponics, i-aquaculture, amanzi okusela, ii-aquariums, i-pool kunye ne-spas, imfundo kunye neemarike zegadi.
I-Single-Junction Replaceable Electrode pH Testers
Inyathelo elinyukayo ukusuka kumvavanyi we-single-junction disposable tester yepokotho ye-single-junction, enokufikelela ukuchaneka okungcono kwe-+0.01 pH. Lo mvavanyi ufanelekile kuninzi lwe-ASTM Intl. kunye neenkqubo zovavanyo lwe-US EPA. Inzwa inokutshintshwa, igcina iyunithi, ngoko inokusetyenziswa ngokuphindaphindiweyo. Ukutshintsha inzwa lukhetho lomsebenzisi oqhelekileyo osebenzisa rhoqo umvavanyi. Xa iyunithi isetyenziswa rhoqo kwaye iisampulu zine-ion ephezulu etyhefa i-electrolyte kwi-electrode, kunokuba luncedo ngakumbi ukuya kwinqanaba elilandelayo labavavanyi ngeteknoloji ye-electrode ephindwe kabini.
I-Double Junction Replaceable Electrode pH Testers
Itekhnoloji ye-double-junction inikezela indlela ende yokufuduka kukungcola ukuhamba, ukulibazisa umonakalo owonakalisa i-pH electrode, ukuphucula kunye nokwandisa ubomi beyunithi. Phambi kokuba ungcoliseko lufikelele kwi-electrode, kufuneka isasazeke kungekuphela nje kwijunction enye, kodwa idibane ezimbini. Abavavanyi be-double-junction banzima-umsebenzi, abavavanyi bekhwalithi ephezulu abamelana neemeko ezinqabileyo kunye neesampuli. Zingasetyenziswa namanzi amdaka, izisombululo ezinesulfide, isinyithi esinzima kunye ne-Tris buffers. Kubathengi abafuna ukuphindaphinda ngokuqhubekayo iimvavanyo zabo ze-pH, ukuveza iinzwa kwizinto ezinobundlobongela obuphezulu, kubalulekile ukusebenzisa umhloli we-double-junction ukwandisa ubomi be-electrode kunye nokuqinisekisa ukuchaneka, ngokunjalo. Ngokusetyenziswa ngakunye, ufundo luya kukhukuliseka kwaye luthembeke kancinci. Uyilo lwe-double-junction luqinisekisa umgangatho ophezulu kwaye iteknoloji isetyenziselwa ukulinganisa amanqanaba e-pH ngokuchaneka okuphezulu kwe- +0.01 pH.
Ukulinganisa kubalulekile ukuchaneka. Kuqhelekile ukuba imitha ye-pH ikhukuliseke kwiisethingi zayo ezilinganisiweyo. Nje ukuba yenzekile, iziphumo ezingachanekanga zinokubakho. Kubalulekile ukulinganisa abavavanyi ukufumana imilinganiselo echanekileyo. Ezinye iimitha zepokotho ye-pH zinokuqatshelwa kwe-buffer ngokuzenzekelayo, zenza ulungelelwaniso lube lula kwaye lukhawuleze. Uninzi lweemodeli eziphantsi kwexabiso eliphantsi zifuna ukulinganisa rhoqo ukuze kuqinisekiswe imilinganiselo echanekileyo. Ulungelelwaniso lwabavavanyi be-pH kufuneka lwenziwe rhoqo, kucetyiswa yonke imihla okanye kanye ngeveki. Lungiselela ukuya kuthi ga kumanqaku amathathu usebenzisa i-US okanye iZiko leSizwe leMigangatho kunye neTekhnoloji yemigangatho emiselweyo.
Abavavanyi bepokotho bebehamba phambili kuvavanyo lwamanzi kule minyaka idlulileyo, njengoko bexinene, bephatheka, bechanekile kwaye banokuvelisa ukufundwa kwimizuzwana ngokucofa iqhosha. Njengoko imarike yomvavanyi iqhubeka nokufuna ukuziphendukela kwemvelo, abavelisi bongeze izinto ezinje ngezindlu ezingenamanzi kunye nezindlu ezingenaluthuli ukukhusela abavavanyi kwiindawo ezimanzi kunye nokuphathwa kakubi. Ukongeza, iziboniso ezinkulu, ze-ergonomic zenza ukufunda kube lula. Imbuyekezo yobushushu obuzenzekelayo, into edla ngokugcinelwa iimitha eziphathwayo kunye nebenchtop, nayo yongezwa kwiimodeli zamva nje. Ezinye iimodeli ziyakwazi ukulinganisa kunye nokubonisa ubushushu bokwenyani. Abavavanyi abakwizinga eliphezulu baya kubonisa uzinzo, ulungelelwaniso kunye nezalathi zebhetri kwisibonisi kunye nokucima ngokuzenzekelayo ukuze kugcinwe ubomi bebhetri. Ukukhetha umvavanyi wepokotho ofanelekileyo kwisicelo sakho kuya kukubonelela ngokusetyenziswa okuthembekileyo nokuchanekileyo rhoqo.
Sinako ukubonelela ngezinzwa zomgangatho wamanzi ezilinganisa ezinye iiparameters ezahlukeneyo kwireferensi yakho
Ixesha lokuposa: Nov-12-2024