BSCI 424 — PATHOGENIC MICROBIOLOGY — Fall 2000


pH Indicators

 

 

Description of Common pH Indicators


Bromcresol Purple
Yellow at pH < 5.2
Purple at pH > 6.8

Bromthymol Blue
Green at pH < 7.0
Deep blue at pH >7.6

Neutral Red
Red at pH < 6.8
Colorless at pH > 6.8

Phenol Red
Yellow at pH < 6.8
Red at pH > 6.8

 

 

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Designed & Maintained by David M. Rollins
Copyright © 2000, D.M. Rollins and S.W. Joseph
Revised: August 2000
URL: http://life.umd.edu/classroom/bsci424