Table A1:
Absorbances of dyes before and after 2-hour reactions with 5 ml NaOCl
Dye
Absorbance (t = 0)
Absorbance (t = 2 hours)
Methyl Orange
1.983
0.828
Bromocresol Green
1.755
1.406
Bromothymol Blue
2.586
0.552