Contact us
Choose a category below so we can get back to you as quickly as possible.
C.石蕊試液遇酸變紅.遇堿變藍.氫氧化鈉溶液是堿,變藍.稀硫酸是酸,變紅.食鹽溶液鹽,不變色.
常用:甲基橙、酚酞、石蕊 石蕊遇酸變紅,遇堿變藍.ph在8到10為紫色 酚酞遇酸不變色,遇弱鹼粉紅色,遇強鹼顯紅色
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.