"Acid Style" Carboy

What is the difference between a normal carboy and the “acid style” that I see sold in a few places? What justifies the cost difference?

Acid carboy is 6.5 gallons and typically was a threaded top to fit a screw on lid.

The screw on lid is really nice for sanitizing and storage

The glass might be thicker, too. And frequently they come with a styrofoam packing container that has many handy uses for a home brewer.

+1 to what everyone here said.
Until last year, I had one that held 7 gal, which I purchased more than 25 years ago.
I’ve been using a new 6.5 gal one since the old one broke (because I was a bonehead).

Either way… 6.5 or 7gal … if you’re looking to ferment in glass, these are ideal. For me, they totally eliminated the need for any kind of beer wasting blowoff tube.
But as with any glass carboy, you do have to use care when handling them. :oops:

Thanks for the info… All makes sense.

Any ideas on how they came to be called “acid?”

“acid” came in them for what ever purpose. Science labs, industry …

[quote=“HaleBrewer”]Thanks for the info… All makes sense.

Any ideas on how they came to be called “acid?”[/quote]

They are industrial nitric acid containers.

One nice thing about them is that they have no ridges, making them easier to clean.