Duda Energy hydroc 1 Quart / 950Ml Bottle of Concentrated Hydrochloric/Muriatic Acid, HCL, 25 Storage, Industrial Grade, 32 fl. oz.

This is the real deal. Very very very strong. Will wipe out any toilet ring imaginable and some that aren't. But, be very very very careful with it and it will wipe you and your skin and lungs out too if you are not. Would kill so keep it locked up and totally unavailable to children and careless adults.

Just what we needed and the price was right. We use this at home for science experiments. I don't know what to do now that we're done with the science experiments though. How do we get rid of it?

Well, the product is as advertised. I used this for a high school science project I needed, and the speedy reception time really alleviated my worries. It's hydrochloric acid of a pretty high concentration, so the seller made the necessary precautions when sending it. It's wrapped up multiple times when you finally receive the product. Even then, open it outside. The fumes are really dangerous. But, if you need some good hydrochloric acid for whatever, buy it from this seller. He's got you covered.

Nothing cleans the rust off of the inside of a toilet, except this stuff.Wear gloves and goggles and keep the window open and fan on if you've got one.

Used this to fume some metal parts, and replicate aging. Worked like a charm. Use in a well ventilated area, and use gloves. Shipped well.

Not very clean material--very yellow, probably high iron content. Not suitable as a reagent or for electroplating solution that must be free of iron. Local ACE Hardware has better looking stuff. Ok as a cleaner, pickling metal, and misc. experiments (I used it to test for carbonate filler in some old TSP cleaner). Also, it's not really "concentrated" as that term usually refers to >36%.

Super powerful. Be careful pouring onto surface. My brick came out super clean!!

Excellent packaging, Fast shipping , super quality for the right price.