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Re: hana tds meter
I agree with Wright.
For what I use it for I just put it in distilled water and see what the TDS
is, it should be close to zero, mine runs at 2 ppm. I then take a
premeasure amount of salt mix it in a gallon of water and see what that is.
I want all my tanks to be there, so that is my base factor.
David J Rossi
chezsous at home_com
----- Original Message -----
From: "Wright Huntley" <huntley1 at home_com>
To: <killietalk at aka_org>
Sent: Friday, March 02, 2001 11:36 PM
Subject: Re: hana tds meter
> Taltos wrote:
> > I've ordered one of the Hana TDS meters that many of you have been
recommending. I seem to remember someone saying something about
calibrating the unit. but honestly can't remember the line of conversation.
Can anyone recommend how, and or if this needs to be done. and maybe how
to best use the unit.
> It comes with a calibration certificate, and they don't drift. For our
> purposes we probably never need to check the calibration. If we do, a
> measured amount of salt in distilled water can be prepared to do the job.
> Mostly we are interested in tds *differences* of 50% or more, so a few
> percent off in calibration is not vital.
> If you are taking data for a scientific paper, I take it all back.
> Otherwise, I have never *needed* to calibrate mine, and I'm currently on
> about my 4th meter, over the years. [They do get catastrophic damage, or
> fail completely. Try dropping one in a tank, sometime. ;-)]
> Wright Huntley, Fremont CA, USA, 510 494-8679 huntleyone at home dot com
> Politicians and diapers have one thing in common.
> They should both be changed regularly
> and for the same reason.
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