"technical" or "industrial" grade muriatic acid?

Does anyone know the difference between "technical" and "industrial" grade muriatic acid?
Both are on Amazon, I bought the "industrial" grade and below is the response from the seller to a question about making 5% for MMS actavator

"This product is 950ml at 32%, which means it has appox. 354 grams of HCl and 752 grams of H2O.
To make a 5% solution, you would need the 354g of HCl you already have mixed with a total of 7080g of H2O. Subtracting out the 752 already in the bottle, you will need to add 7080g of water.

So if you mix this bottle with ~1.87 gallons of distilled water, you will get approx. of 5% solution."