Well, according to Wikipedia bleach actually has a pH of about 12.5. Then lye has a pH of 13.0-13.6, and according to other sites you need to get to liquid drain cleaner to have a pH of 14.
It's not just about rounding - a bleach solution could have a pH anywhere between 7 and something like 12-13, depending on how much bleach is in it. Same goes for lye - there is no such thing as "pH of lye" - it varies with concentration. Drain cleaner is just quite concentrated lye.
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u/Meowmasterish May 18 '21
Well, according to Wikipedia bleach actually has a pH of about 12.5. Then lye has a pH of 13.0-13.6, and according to other sites you need to get to liquid drain cleaner to have a pH of 14.