pH Indicators

_ Indicator	_ ___pH Range___	Color ___in Acid___	Color ___in Alkali___
Thymol Blue (acid)	1.2 - 2.8	Red	Yellow
Methyl Orange	3.1 - 4.4	Red	Yellow
Bromcresol Green	3.8 - 5.4	Yellow	Blue
Methyl Red	4.3 - 6.3	Red	Yellow
Litmus	5.0 - 8.0	Red	Blue
Bromcresol Purple___	5.2 - 6.8	Yellow	Purple
Bromthymol Blue	6.0 - 7.6	Yellow	Blue
Neutral Red	6.8 - 8.0	Red	Orange
Phenol Red	6.8 - 8.4	Yellow	Red
Cresol Blue (base)	7.2 - 8.8	Yellow	Red
Thymol Blue (base)	8.0 - 9.6	Yellow	Blue
Phenolphthalein	7.2 - 10.0	Colorless	Red