Anybody using a TDS meter?

[Anonymous]

That's total dissolved solids. I think I've heard of people using it to check their before/after RO water. Anybody?

 

[randy holmes-farley]

You can use a conductivty meter with an appropriate range for such a test. A TDS meter is just a conductivity meter in disguise.

Do you have a question about it?

 

[Anonymous]

Thanks Randy,
Well, I've just seen reasonably priced TDS meters around lately, and wondered if they worked well enough to be useful for determining the need for and effectiveness of a RO system...

 

[lionfish1]

yes I have and use a TDS meter and it is very usefull, not only in testing youre water but testing the filter life of youre RO/DI unit, they are cheap like $30, I have the Hana one, www.aquariumwaterfilters.com , cya.

 

[SPC]

Dan, I also use the Hana model and it seems to work well. Now, what I will alert you to is the cost of replacement batteries. This normally would not be an issue, I would imagine if the meter is used in an appropriate manner that the batteries would last about 10 years. I left mine on by accident however, and when I went to get new batteries I was in for a shock. It takes 4 of the watch type batteries at $2.99/battery so that came up to about 1/2 of what the new meter cost

If I had to buy another one I think I would check on what type batteries were required before I made the purchase.
Steve

 

[normd]

I have both a handheld and an in-line TDS meter. I love both, but I rely on the in-line and rarely use the hand-held much anymore. You can get either at aquariumwaterfilter'w web site

Please note, I am their webmaster and therefore "affilaited".

Norm

 

[lionfish1]

normd youre site is out of wack, cya.

 

[Anonymous]

I've got the blue handheld meter with my system 2 weeks ago--works good. The on/off is spring loaded in the off direction so you can't leave it on--nice!

I just didn't see the need for an in-line monitor. Nice, but this works just as good for me.

Ty

 

[simonh]

What is the equivalent conductivity (µS/cm) for 1 ppm TDS ?

Hanna do some other models, one called the PWT (Pure Water Tester) which does downto 0.1 uS/cm (range from 10 Kohms - 10 Mohms). Also they do another model called the UPW (Ultra Pure Water Tester) which claims to do 1 - 50 Mohms resistivity.

I'm just wondering if PWT model would be more appropriate than the TDS monitors.