Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: L.Doubtfire - The Blade Runner on November 12, 2010, 07:53:02 am
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Any ideas on this fella`s ? My tds meter is showing readings of
Anywhere between 150 and 350 ppm on some untreated rainwater
That I`ve collected yesterday.Yet some rainwater that I`ve put thru`
My resin to `polish`down to 000ppm shows a reading of,,,,,,000ppm !
I took the batteries out,left the tds meter at normal room temperature
For a few minutes,still there`s the eratic readings.My normal reading
For collected untreated rainwater is 000 ppm to 003 ppm.
Can`t understand it,do ya recon the batteries need changing or what ?
Bearing in mind the resin treated rainwater shows 000ppm.
Thanks for replies,
Lewis Doubtfire
P.S. The tds meter is a few years old with the original batteries.
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Buy or borrow another tds meter to compare or take/post a sample of some water to another meter. I doubt that your rainwater has changed that much.
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Have you calibrated it recently ?
Darran
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Hi Smudger,how do you calaborate a meter ? Thanks
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You will need some calibration fluid like this
http://www.tdsmeter.com/products/calibrationsolution.html
then, depending on what make/type of meter you have, you adjust the setting screw to get the correct reading
Darran
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Thanks Smudger and Jeff. Have taken a print out about
Calibration fluids.Looks really interesting.
Chalk one up to the group ! !
Lewis Doubtfire