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Sera Iron test

At 03:48 AM 4/15/99 -0400, Zon Hisham asks:
>I noticed that the Sera iron kit starts at 0.25ppm. Is there a way to
>measure iron at 0.1ppm with this kit?
>I have read Dave's posting. Was that 25ppb parts per billion?

Yes.  Use 5x water and be very sensitive to the pink tint.

Dave Gomberg, San Francisco            mailto:gomberg at wcf_com