The meaning of acid bath is below:
An acid bath is a suitable container that holds up to several liters of concentrated acid that is used for cleaning glassware, plastic, and ceramic objects. Metal objects such as tweezers, spatulas, and stirring bars should never be placed in the acid bath as they will corrode. Link
The use of acid bath varies in application, for instance, concerning metal or iron you can make use of it to clean the rusted part of the iron. There are several other examples of iron bath as it stands today but it is not suppose to come in contact with the human body.
Although some folks bent on doing evil make use of the acid bath to threaten people they resent, and we all know the consequences of this liquid touching the human body, it is a disaster.
So, this is my little view about acid bath!
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