Cost Comparison of Chlorine Sources

[chem geek]

The bleach is less dense than chlorinating liquid. Whereas 12.5% chlorinating liquid has a density of around 1.16, 6% bleach has a density of around 1.08 g/ml. So 1.36 gallons weighs around 1.36 * 8.33 * 1.08 = 12.24 pounds so $2.25/12.24 = $0.184/pound. And $0.184/.057 = $3.23

so it's actually worse than you calculated because bleach is less dense than chlorinating liquid. Basically, a good deal would be getting a 96-ounce container of 6% bleach for $1 since that would be $2.60 per % available chlorine. That seems to be the best deal most people get except for unusual sales.

I've updated the table since the chlorinating liquid wasn't really $2.50, but was $3.25 (before tax). It's more expensive than some bleach so I've added the above $1 for 96 ounces scenario to the table. Some people can get chlorinating liquid for a very low price, but most don't (including me), but I don't mind paying more for the convenience of carrying less and getting the containers reused.

Richard