"unclenorm" wrote in message oups.com...
It is no use trying to twist your statement now you
realise what a stupid statement it was.

No, I am far from realising this... Help me to realise, please! :-)

Your statement that your RO/DI filters do not do a very good
may well be true, for many reasons. A properly operated and
mentained good quality RO/DI unit will give you water that even
the best of your labs will not be able to detect any impuritys.

That was my point, exactly... A lot of good labs is NOT ABLE to
detect several ions at the concentrations listed in the NSW.
Why bother with such ions then ?

I am not cheating my self, purification of water to the
highest grade is our buisiness

Tell me please, how do you measure the concentration of Antimony and
Cesium in your water ? What are the levels of them in your fish tank ?
How about Tungsten, Chromium, Bismuth, Gold ? How often you test
for them and where do you test your water samples ? I am sure you
know what are the levels of these ions in the water... tell me, please!

p.s. Note, I am not mean and I do not ask about Radium and Radon :-)