Gary Davis
Well-known member
Who knew there was a thread for chlorine prices, as my liquid chlorine distributor recently raised his prices to $29.33/4 for the 12.5% bleach ($7.33/gallon).I just purchased 10 gals LC via online at Walmart. I picked it up and the mfg. Date was 8/11/22 - just over 2 wks old. So it appears that WM is still purchasing LC. This is Pool Essentials 10%.
(I like the hasa approach because it ends up being much better for the environment than the store bought packaged bleach ends up as.)
In another thread (over here) I had just this week previously linked to current 10% Walmart (Pool Essentials) and 10% Home Depot (HDX, Kem-Tek & Pool Essentials) prices of roughly $5/gallon. I only found the date code wiki recently so I'll check what I got from each.
Found tons of weight:volume:trade% math threads
1. Weight Verses Trade- Understanding Chlorine Concentrations in Different Sources
2. Bleach concentration per unit volume and other calculations
3. Measuring liquid chlorine/bleach by weight
4. How to calculate cost per effective chlorine liquid v powder
5. Cost Comparison of Chlorine Sources
Ran the two calculations (EDIT: The 10% values are corrected as per the doublecheck kindly performed by ccbill below!)
1. 10% Walmart & HD = ~$5/gal x 1gal/9.4# x 1/8.77% available chlorine by weight = ~$0.06 per pound of available chlorine
2. 12.5% Hasa = ~$7/gal x 1gal/9.7# x 1/10.78% available chlorine by weight = ~$0.07 per pound of available chlorine
Well, there it is.
Obviously, the equation will remain the same for everyone but the price paid per gallon will change for each of us and over time.
I don't use pucks or powder, but if someone needs the solids calculation, the formula is apparently
3. Solids: $x/y# x 1/z% available chlorine by weight = price per pound of available chlorine
Where x is the cost of the solid and y is the number of pounds you bought and z is the available chlorine percentage printed on the label.
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