Why not use liquid chorine instead of bleach ?

[giroup01]

Here's the math, do correct me if I'm wrong. All prices in CDN$.

For cal hypo, I bought 25 kg of 70% cal hypo for $77.93, that's $0.0031/g, you need 29.5 grams for 1 ppm in 20000 liters so that's $0.09/ppm. (Source: Taylor Chemistry Guide from my K2005)

For the Canadian Tire Purox, it's $4.99 for 5 liters, that's $0.998/liter, you need 0.2 liters of the stuff for 1 ppm in 20000 liters (assume it's 10%) so that's $0.20/ppm. (Source: www.canadiantire.ca)

For the IGA Javex, it's $2.49 for 3.6 liters, that's $0.69/liter, you need 0.4 liters of the stuff for 1 ppm in 20000 liters (assume it's 5%) so that's $0.27/ppm. (Source: www.iga.net)

I think the math works out, let me know if it doesn't.

[Kinguni]

Expensive bleach! $1.17 for the same size of WalMart band.

I'm interested to see if your calculations for cal hypo are correct. It's a little beyond me.

[prh129]

One other point, in case you're not aware, is that the higher concentrations of bleach will break down faster so try to keep them away from heat & light & use them up first if you have both liquid chlorine and bleach.

Peter

[cleancloths]

Nobody, I repeat NOBODY uses liquid chlorine in a swimming pool. You might think you are, but you are using bleach. Some large commercial pools use chlorine gas, but never liquid. You are not equipped to deal with liquid chlorine. Believe me, I am a chemical engineer and used to work in a chlorine / caustic soda production facility. Liquid chlorine does not exist in nature, and the only way to get it is to compress and deep chill to liquefy it. It will only remain a liquid under pressure and low temperature. When exposed to normal pressures and temperatures it will quickly flash off to a greenish yellow gas. If you were hanging around liquid chlorine without a respirator you would most likely now be in a hospital with chemical pneumonia, unless you were already dead.

[giroup01]

Liquid chlorine does not exist in nature, and the only way to get it is to compress and deep chill to liquefy it. It will only remain a liquid under pressure and low temperature. When exposed to normal pressures and temperatures it will quickly flash off to a greenish yellow gas. If you were hanging around liquid chlorine without a respirator you would most likely now be in a hospital with chemical pneumonia, unless you were already dead.

Yup, you're so right.

But then I always see people going for the trichlor instead of the cal hypo/bleach/whatever because it says "90% available chlorine" on the label. Good marketing eh?

[CarlD]

I'm not sure I know why you need chlorine in Canada...I thought nothing grows in water that's just above freezing...Man, that's cold!!!

[giroup01]

I'm not sure I know why you need chlorine in Canada...I thought nothing grows in water that's just above freezing...Man, that's cold!!!

I want to let you know that, contrary to what you and others may think, Canada is not a cold, freezing country. Just to prove my point, it's the middle of July and my pool water has reached its highest temperature so far this season, behold, it's a sizzling 72F. So there. And it may go even higher, it may reach 74F if we're lucky and the weather holds. Now that's hot my friend. So we may not need our polar-lined speedos this weekend. Heck I may even have to turn ON the AC in the car! So there.



Best regards,

Paul