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Re: Lamotte CO2 test

Also, if your phosphates are more than 5% of your CO2 concentration in ppm, 
it will give you a false high CO2 reading. 

For most people this isn't a problem.

-- Stephen

> Date: Wed, 27 Feb 2002 12:29:59 -0800 (PST)
> From: Cavan <millsman7 at yahoo_com>
> Subject: Lamotte CO2 test
> I was checking out the Lamotte kits on FosterSmith and
> noticed that the co2 kit is only 20 bucks.  I looked
> it up in the archives and there was a George Booth
> post that said that mineral acids may interfere with
> the results.  I called Lamotte and all they could tell
> me was that feric iron above 1ppm would interfere.
> They couldn't say about ferrous.  I'm assuming that
> the small amounts of trace elements added won't
> interfere.  I'm also assuming that with measured
> carbonate hardness and co2, I can figure out ph.  That
> would be cheaper than a ph meter.
> Thanks, Cavan