Breakpoint Chlorination

[waterbear]

Even though beachcals says metric or imperial Michael stated in one of his posts that it is US gallons. He said he will fix that in the next version.

[RavenNS]

Okay great,
I was specifically refering to the calculations on the previous page of this thread...
( Mls to Gallons & such)

- so when people here say, " my pool is Blah Blah gallons", they mean US Gallons (?) & that is the standard measurement for you USAers?

good to know; Us Canadians get a wee bit confused on the whole gallons issue

[waterbear]

another good reason why we should have all gone metric years ago!

[RavenNS]

I agree 100%
I can't fathom why the USA wants to keep up this old system,
it makes calculations quite difficult, particularly when comparing to international testings

[chem geek]

I was using and assuming U.S. gallons in my calculations. In my spreadsheet I have a switch for metric so instead of U.S. gallons its liters. However, should I also have something for Imperial Gallons? Is that commonly used for pool volumes in the British (shrunken) Empire?

[RavenNS]

My understanding is that if you are part of the " commonwealth" then you use Metric
...
I was a travel agent for a bit ( one of the many things I've done...lol), & I can't think of anybody else ( off hand) that uses imperial over metric ( other than the USA)...

I believe the scientific community has chosen Metric. period. (lol)

[chem geek]

Actually, when you say no one else uses Imperial over metric except the USA, I think you may not realize that there are THREE systems at work here. The metric system, the Imperial system, and the U.S. system. In the Imperial system, a gallon is 4.54609 liters both for liquid and dry quantities. In the U.S. system, a liquid gallon is 3.785411784 liters while a dry volume measure "equivalent" is called a bushel and is 35.23907016688 liters. What makes the U.S. system even more confusing is that there are liquid quarts which are each 0.946352946 liters AND there are dry quarts that are 1.101220942715 liters (and yes, that implies that there are 4 liquid quarts in a gallon but 32 dry quarts in a bushel.

Of course, there is further insanity with regard to lengths and weights and a decent summary of all of this is found at "this is insane".

We tried to go metric in the U.S. way back when, but too many people's brains hurt too much and being a democracy, well, you get the idea. Politicians would rather get re-elected than to do the right thing.

Richard