NSF/ANSI 61 vs. NSF/ANSI 372: Izinto Ezibalulekile Zokuqondanisa Amanzi Aphuzwayo
Kwadalwa ngo Ngokwamukisa
I-NSF/ANSI 61 ngokumelene ne-NSF/ANSI 372: Izinto Ezibalulekile Zokuphumelela Okokuphuza Amanzi
Lapho ucacisa izinto ezisetshenziswa ezinhlelweni zamanzi okuphuza, i-NSF/ANSI 61 ne-NSF/ANSI 372 yizindinganiso ezimbili ezibaluleke kakhulu, kodwa zisebenzela izinjongo ezihlukene ngokuphelele. I-NSF/ANSI 61 igxila emiphumeleni yezempilo yezinto ezingcolisa amanzi okuphuza (okukhiphayo). I-NSF/ANSI 372 igxila kuphela ekuquketheni ubuholi ngaphakathi komkhiqizo uqobo (okufakiwe/ukwakheka). Ezinhlelweni eziningi zamanzi okuphuza, ukuthobela zombili izindinganiso kuyadingeka.
1. I-NSF/ANSI 61: Indinganiso Yemiphumela Yezempilo
I-NSF/ANSI 61 (Izingxenye Zohlelo Lwamanzi okuphuza – Imiphumela Yezempilo) yiyona ndinganiso ephelele elawula ukuthi yimaphi amakhemikhali nokungcola okungadluliselwa kusuka entweni kuya emanzini okuphuza.
● Injongo: Ukukhawulela ukugxila kwezinto ezingcolisa amakhemikhali (njengezinsimbi ezinzima, izinto eziyingozi ezingaguquguqukiyo, nama-phthalate) ezivela ezingxenyeni zesistimu (amathangi, imibhobho, ama-valve, amafawusethi) emanzini.
● Inqubo: Izingxenye zihlolwa emanzini anamazinga ahlukene e-pH nezinga lokushisa ukuze kulinganiswe iminyaka yokuchayeka. Uma kukhona into ephuma ezingeni elidlula i-Single Product Allowable Concentration (SPAC), umkhiqizo uyahluleka.
● Isibopho: Sibanzi. Sihlanganisa zonke izinto ezithinta amanzi okuphuza.
2. I-NSF/ANSI 372: Izinga "Lokuholela Okuncane"
I-NSF/ANSI 372 (Izingxenye Zesistimu Yamanzi okuphuza – Ukuholela Okukuyo) yizinga eligxilile elingenisiwe ukuze kwaneliswe izidingo zoMthetho Wokunciphisa Ukuholela Emantini okuphuza.
● Injongo: Ukuqinisekisa ukuthi indawo engaphezulu yomkhiqizo ehlangana namanzi inesilinganiso esinesisindo esingeqile ku-0.25% wokuholela.
● Inqubo: Ayihloli ukukhipha izinto (ukuthi ingakanani i-lead ephuma emkhiqizweni). Kunalokho, ihlola ukwakheka kwezinto (ukuthi umkhiqizo wenziwe ngani). Ikuqinisekisa ukuthi umkhiqizi usebenzisa ama-alloy nezinto ezingenawo "lead".
● Isikali: Esincane. Igxile kuphela kokuqukethwe kwenhlabathi.
3. Isiqhathaniso: Ngokubuka nje
Isici | NSF/ANSI 61 | NSF/ANSI 372 |
Inhloso eyinhloko | Vimbela ukudonswa kwamakhemikhali (Imiphumela yezempilo). | Qinisekisa ukuthi okuqukethwe ubuholi bungaphansi (Ukwakheka kwezinto). |
Ukugxila Ekuhloleni | "Kukhishwa ini?" (Okukhiphayo) | "Yenziwe ngani?" (Okungenayo) |
Isikali samakhemikhali | Okubanzi (Amatshe, ama-VOC, ama-organic). | Kunomkhawulo (I-Lead kuphela). |
Izinga lokuthobela | Kunokukhuthala kakhulu; izivivinyo zokukhipha izinto ezisendlini yokuhlola. | Kunokukhuthala; ukuhlaziywa kwezinto ezisindayo. |
Isimo somthetho | Kudingeka ngamakhodi amaningi ezifundazweni/ezindaweni. | Kudingeka ukuze kuhlangatshezwane nemithetho kahulumeni "Lead-Free". |
4. Kungani Uvame Ukudinga Bobabili
Emikhakheni yobunjiniyela yesimanje, i-NSF 61 ne-NSF 372 azivame ukubhekwa njengenketho ethi "noma lokhu noma lokhu".
1. Ukuhlangana: Imikhiqizo eminingi ehambisana ne-NSF 61 nayo ihambisana ne-NSF 372.
2. Isidingo: Izinhlaka eziningi zikamasipala namakhodi okuphambanisa amanzi adinga isitifiketi kuzo zombili izindinganiso.
○ I-NSF 61 iqinisekisa ukuthi umkhiqizo awuniboli amanzi ngamakhemikhali ahlukahlukene.
○ I-NSF 372 iqinisekisa ukuthi umkhiqizo uhambisana nencazelo esemthethweni ethi "mahala inhlabathi".
3. Umthelela wokuthenga: Lapho ubhala Isicelo Sokunikezwa (RFP) noma ukucaciswa kobunjiniyela, kufanele ugcizelele ukuthi imikhiqizo kufanele "ibe nesitifiketi ku-NSF/ANSI 61 kanye ne-NSF/ANSI 372." Ukucacisa eyodwa kuphela kushiya isikhala esibalulekile sokuhambisana.
5. Imibuzo Evame Ukubuzwa (FAQ)
Umbuzo: Uma umkhiqizo une-NSF 61 certified, ingabe ngokuzenzakalelayo uhlangabezana ne-NSF 372?
A: Cha. Umkhiqizo ungahlolwa futhi unikezwe isitifiketi se-NSF 61 (obufakaza ukuthi awukhiphi amazinga aphezulu amakhemikhali) kodwa usengaba namazinga e-lead aphezulu kune-0.25% avunyelwe yi-NSF 372. Kufanele uqinisekise zombili izitifiketi.
Q: Ngingasebenzisa imikhiqizo enesitifiketi se-NSF 372 ezinhlelweni zokuvikela umlilo?
A: I-NSF 372 yindinganiso yamanzi okuphuza. Ngenkathi iqinisekisa i-lead ephansi, ayiqinisekisi ukuthi impahla ifanele izidingo zokucindezela okuphezulu, ezakhiwo, noma ezikhemikhali ezithile zezinhlelo zokucisha umlilo (ezilawulwa yizindinganiso ezifana ne-NFPA 22).
Q: Ingabe i-NSF 372 ifana ne-"Reduction of Lead in Drinking Water Act"?
A: I-NSF 372 iyindlela esetshenziselwa ukukhombisa ukuthobela umthetho. Lo Mthetho udinga imfuneko ye-"lead-free"; i-NSF 372 yindinganiso yezobuchwepheshe esetshenziselwa ukuqinisekisa ukuthi umkhiqizo uhlangabezana naleyo mfuneko.
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