I've been reading a lot of the cost comparison threads, and I feel like I may be doing something wrong with my calculations when I'm trying to figure out if my local pool store (Pioneer Pools in Kitchener, ON) is my best deal for chlorine.
I buy refillable 10L jugs (aprox 338 US oz) for $5.99/ea. I stop in at the store and they swap out my jugs with ones filled from a huge tank around back of the store that's labelled "Sodium Hypochlorite 12%". The deposit on the jugs was $5, but I started using these a few years ago and only have 2, so $10 over the amount of jugs I've swapped out over the years is pretty negligible. Since I have an SWG, I really only use this at the start of the season when I SLAM, and if I have to do a re-SLAM at any point during the season.
My cost calculation for 2 jugs (1 trip to the store) has been:
$11.98 / 676 oz / 0.12 (12% CL) = $0.148 per chlorine oz.
It seems like a simple calculation, but it's throwing me off that this comes out to be much cheaper than what most of the US members here are paying. And from experience with nearly everything else, Canada NEVER gets a deal vs our southern neighbours.
Is there something I'm missing? Is there a method to test the true strength of this stuff with my TF100 kit?