No, your city water will contain various minerals and chemicals to purify
the water. These chemicals will interfere with the pH of your sample and
throw off results. If you can obtain reverse osmosis water that will work
like distilled water. In the US we can buy RO water in most grocery
stores...also the distilled water.

Bill Frazier
Olathe, Kansas USA

"herbeapuce" > wrote in message
oups.com...
> thank you sir.
> I don't have distilled water.... do you think I can use our city water?
> thanks
> stef
>