On Sun, 29 Nov 2009 07:43:15 -0600, Richard Casady
wrote:

On Fri, 13 Nov 2009 20:28:27 +0700, Bruce
wrote:

Certainly if you can smell it you have enough; in fact you have more
then you need.

The threshold for smelling Cl is one part per million. One gram per
ton.

Casady

Depends on the nose I suppose, but actually the quote comes from the
Water Supervisor at Udon Airbase in the days I worked there. I had
dosed a well with what seemed to be a small amount of sodium
hypochlorite and turned the water into Clorox and since I had gotten
the stuff from the Water Plant I went back to bitch, whereupon I was
given a water test kit and the instructions that "you use less then
you think is enough" together with the "if it stinks you got too much"
statement.

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)