Universal Ph Saliva Test Paper hauv Rolls

Chemistry yog inseparable los ntawm kev daws, thiab cov kua muaj kua qaub thiab alkali. Tus "tus pas ntsuas" rau kev ntsuas pH ntawm kev daws yog "cov ntawv ntsuas pH dav", uas yog cov ntawv npaj ua tiav. Thaum siv nws, rhuav tshem ib daim kab xev thiab muab tso rau hauv lub iav saib. Tuav ib lub tee ntawm cov tshuaj ntsuam xyuas nrog ib lub iav qhuav, los yog Siv cov yas dropper los nqus cov tshuaj thiab muab tso rau hauv nruab nrab ntawm daim ntawv xeem, thiab tom qab ntawd muab piv cov xim ntawm daim ntawv xeem nrog cov qauv colorimetric card kom paub qhov pH ntawm kev daws, uas yog yooj yim heev. pH daim ntawv xeem tau muab faib ua daim ntawv xeem precision thiab ntau yam ntawv xeem. Daim ntawv xim ntawm cov ntawv xeem pH txawv ntawm cov ntawv xeem Guangfan. Daim npav colorimetric ntawm Guangfan pH daim ntawv xeem yog ib xim txhua tus nqi pH. Cov ntawv xeem pH raug muab faib ua 0.5, 0.3, 0.2 lossis ntau dua qhov raug raws li qhov ntsuas qhov tseeb.