Lub hom phiaj ntawm kev ruaj ntseg kuaj cov khoom kom zoo nkauj yog los xyuas kom meej tias cov khoom tshiab lossis hloov kho raws li lub cev xav tau,
chemical thiab microbiological cov qauv zoo nrog rau kev ua haujlwm thiab kev zoo nkauj thaum khaws cia hauv cov xwm txheej tsim nyog.
Vim tias lub voj voog kev loj hlob ntawm cov khoom siv tshuaj pleev ib ce yog luv luv txhua tus neeg tsim khoom yuav tsum tsim lawv tus kheej kev ntsuas kev ruaj ntseg xws li kev lag luam tsim nyog thiab muaj txiaj ntsig zoo rau qhov kev sim xav tau.
Vim tias muaj ntau yam khoom siv tshuaj pleev ib ce "standard" kev ntsuas kev ruaj ntseg tsis tuaj yeem raug sau tseg. Cov neeg tsim khoom xav tau qhov hloov pauv hloov pauv cov txheej txheem sim thiab tsim kom muaj lub hauv paus zoo rau kev ntsuas kev ruaj ntseg ntawm lawv tus kheej cov khoom. Yog li, cov kev ntsuam xyuas tshwj xeeb yuav raug tsim los txhawm rau hais txog cov thev naus laus zis tshiab lossis txawv txawv, lossis hloov kho rau cov khoom lag luam uas muaj lub neej ntev.
Kev ntsuas kev ruaj ntseg tuaj yeem ua tiav hauv lub sijhawm tiag tiag lossis nyob rau hauv cov xwm txheej ceev thiab yuav tsum hais txog kev ruaj ntseg ntawm cov khoom raws li qhov tsim nyog ntawm kev cia, thauj thiab siv.
Kev kuaj lub cev / tshuaj lom neeg ruaj khov
Cov no piav qhia txog txoj hauv kev los kwv yees tias cov tshuaj pleev ib ce zoo npaum li cas yuav tiv taus cov kev ntxhov siab xws li qhov kub thiab txias. Feem ntau, cov tuam txhab txiav txim siab seb puas yuav ua qhov kev ntsuas tshwj xeeb raws li qhov tsis zoo ntawm cov khoom siv tshuaj pleev ib ce tshwj xeeb thiab nws qhov kev cia siab shipping, cia zaub thiab siv cov xwm txheej. Cov txheej txheem kuaj pom muaj xws li:
Temperature Variations: Kev ntsuas kub siab yog tam sim no feem ntau siv los ua tus kwv yees ntawm kev ruaj ntseg mus ntev. Feem ntau cov tuam txhab ua lawv qhov ntsuas kub ntawm 37oC (98F) thiab 45oC (113F). Yog tias ib qho khoom khaws cia ntawm 45oC rau peb lub hlis (thiab pom tias muaj kev ruaj ntseg) ces nws yuav tsum ruaj khov ntawm chav tsev kub rau ob xyoos. Tau kawg, cov khoom yuav tsum tau khaws cia ntawm 25oC (77F) rau ib xyoos. Qhov ntsuas kub zoo yog 4oC (39F) qhov twg cov khoom lag luam feem ntau yuav muaj kev ruaj ntseg zoo. Cov khoom yuav tsum raug rau -10oC (14F) rau peb lub hlis.
Cycle Testing: Cov khoom yuav tsum dhau peb lub voj voog ntawm qhov ntsuas kub ntawm -10oC (14F) txog 25oC (77F). Muab cov khoom tso rau ntawm -10oC rau 24 teev thiab muab tso rau hauv chav sov (25oC) rau 24 teev. Qhov no ua tiav ib lub voj voog. Yog tias cov khoom dhau peb lub voj voog ces koj tuaj yeem muaj kev ntseeg siab zoo hauv kev ruaj ntseg ntawm cov khoom. Ib qho kev xeem nruj dua yog -10oC rau 45oC tsib-lub voj voog xeem. Qhov no tso emulsions nyob rau hauv ib qho kev ntxhov siab loj heev thiab, yog tias nws dhau qhov kev sim, qhia tias koj muaj cov khoom ruaj khov.
Kev Ntsuas Centrifuge: Cov theem dispersed (ntawm cov roj-hauv-dej emulsion) muaj qhov nyiam sib cais thiab nce mus rau sab saum toj ntawm emulsion tsim ib txheej ntawm cov roj tee. Qhov tshwm sim no hu ua creaming. Creaming yog ib qho ntawm thawj cov cim qhia ntawm impending emulsion instability thiab yuav tsum tau ua tiag tiag. Ib txoj hauv kev zoo rau kev kwv yees creaming yog centrifugation. Kub lub emulsion rau 50oC (122F) thiab centrifuge rau peb caug feeb ntawm 3000 rpm. Tom qab ntawd tshuaj xyuas cov khoom tshwm sim rau cov cim qhia ntawm creaming. Qhov kev sim no yog qhov tsim nyog rau cov khoom lag luam uas muaj cov hmoov ntawm txhua yam xws li kua / cream pleev.
Kev kuaj pom lub teeb: Ob qho tib si qauv thiab ntim tuaj yeem nkag siab rau UV hluav taws xob. Tag nrho cov khoom yuav tsum tau muab tso rau hauv iav thiab lub pob tiag tiag, nyob rau hauv lub qhov rais thiab yog hais tias nws muaj ib lub teeb lub thawv uas muaj ib tug dav-spectrum output. Muab lwm lub khob iav npog tag nrog txhuas ntawv ci rau hauv lub qhov rais los ua kev tswj hwm. Txhua zaus peb yuav pom qhov tsis zoo ntawm cov khoom thiab qee zaum ntawm pob kuj. Qhov kev hloov pauv no tuaj yeem yog vim muaj ntxhiab tsw lossis lwm yam khoom muaj txiaj ntsig. Feem ntau txhua yam uas xav tau yog qhov sib ntxiv ntawm UV absorber (piv txwv li 0.1% ntawm benzophenone).
HUAB TAIS, Cia peb nyob hauv kov!
Yog tias koj muaj lus nug txog peb cov khoom lossis kev pabcuam, thov hu rau pab neeg pabcuam.
Sib cuag
Yog tias koj muaj lus nug txog peb cov khoom lossis kev pabcuam, thov hu rau peb pab neeg pabcuam. Muab cov kev paub tshwj xeeb rau txhua tus neeg koom nrog lub npe. Peb tau txais cov nqi tshwj xeeb thiab cov khoom zoo tshaj plaws rau koj.