Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: dave f on February 19, 2012, 09:57:14 am

Title: strange
Post by: dave f on February 19, 2012, 09:57:14 am

ive got 2 identicle tds meters ,i tested my tap water with each one was 123ppm and the other was 99ppm so i tested the water in my tank both readings were 000ppm ??? ??? ???strange

Title: Re: strange
Post by: Tom White on February 19, 2012, 10:03:06 am

The calibration of the TDS meters will be slightly different, however, the TDS meter works by transmitting an electrical current in the water.  Electricity cannot pass through purified water - only through water with dissolved solids in it.

So your TDS 000 is to be trusted.  If your pure water had solids in it; even a tiny amount; you would get two different readings on your TDS meter such as (for example) TDS 10 and TDS 23.

I wouldn't worry at all, if I were you.

Title: Re: strange
Post by: dave f on February 19, 2012, 10:10:00 am

exelent reply cheers

Title: Re: strange
Post by: bumper on February 19, 2012, 05:31:57 pm

i calibrated  mine in some calibrated solution now they both read the same i put both in tap water and they read the same.