If you you anything higher or lower, you could kill your self if you wear the clothing.
You can use a pH paper.
If I recall properly, methyl red transitions between about pH 4 and pH 6, so it would not be a good indicator for sodium hypochlorite bleach which has a pH above 7.
The pH of bleach color is 13.
what is the pH level of bleach (sodium hypochlorite)
The recommended Ph for a community tank is 7.0 which is neutral between alkaline and acidic.
About 9-11. pH of Clorox bleach is 11.5.
12.3222, but is sometime estimated to 12.5
On the scalp and off the scalp lightners/bleach has a pH of or around 9.
Household bleach is about 6% sodium hypochlorite and has a pH around 12 to 12.6 (Highly basic, or alkaline).
bloods pH lvl = 7.4 and bleach pH lvl = 9.5 making blood more acidic and bleach more of a base.
bleach has 13.
bleach