| indicator 
 
 | observations 
 
 | possible pH range 
 
 | 
| Phenolphthalein 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Bromothymol Blue 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Methyl Orange 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Thymolphthalein 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Thymol Blue 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Methyl Red 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Malachite Green 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Bromocresol Purple 
 
 | _________________________________________ 
 
 | ________________ 
 
 | 
| Bromocresol Green 
 
 | _________________________________________ 
 
 | ________________ 
 
 |