pH ntawm cov nqaij lwj (thov siv pebDigital Penetration FOOD PH Meter
zaub mov pH meter)
Yog tias cov nqaij tsis khaws cia kom zoo, cov kab mob kis tau sai heev nyob rau hauv qhov kub thiab txias, av noo, pH thiab lwm yam kev mob tsim nyog thiab sib sib zog nqus ntawm cov leeg. Cov nqaij mos maj mam decomposes, rog dhau los ua rancid, thiab corrupt molecules xws li ammonia, hydrogen sulfide, ethanethiol, butyric acid yog tsim, thiab tsw tawm. Lub sijhawm no cov nqaij tau lwj. Nws tus nqi pH yog siab dua 6.7.
