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Old 12-06-2006, 08:57 PM   #1
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TDS Meter tes results...

I just got this Hanna TDS Meter DiST 6. I tested my tap and got .34 ppt and .63 ms. What does this mean?
My tank was reading at 10 ppt and 20 ms.
What does this mean?
Are there other tests this particular model does?

Thanks!
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Old 12-08-2006, 01:08 PM   #2
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No help on this one?
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Old 12-08-2006, 02:01 PM   #3
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I'm pretty sure you're measuring the conductivity of saltwater using that meter. (Personally I think refractometers are still more accurate or at least easier to understand 8O )

Using Conductivity To Measure Salinity states full strength SW is 53 ms but doesn't have a conversion table to outline what other readings are.

Also the What is TDS? article should help as well.

I see you have bbcode down now
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Old 12-08-2006, 02:23 PM   #4
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It looks like it does test multipule things the readings on the tank are too high for that meter the 10 should be blinking where as on a reef it should be at 50 too high for that meter to register... MS is the conductivity ....
in short great for RO/DI water or distilled water or even tap but not salt in the tank as it can not register that high
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Old 12-08-2006, 03:15 PM   #5
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TDS Meter tes results...

Ok, so I test my tap and want it as close to 0, right? This is without a RO/DI, which is arriving today. I already have a refractometer. I just assumed the TDS meter measured something other than conductivity.

+++EDIT+++
Ok, thanks for those links, tec.
I am thinking, this one is mainly used to test my RO/DI, to see if the membranes need to be changed.
I just tested my tank water for the heck of it...well, it also tests the pH.
Now I have to figure out what else it tests, since the directions were some what Greek.

+++EDIT AGAIN+++
Yeah I have a basic understanding of BB Code, thanks to you! LOL!
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Old 12-08-2006, 03:24 PM   #6
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Your tap is probably 50+ ro/di should be 0

Quote:
Originally Posted by roka64
I just assumed the TDS meter measured something other than conductivity.
It probably does but you have to be a chemistry professor to understand it since the 2 page manual is a bit of a joke.

Have you emailed tech@hannainst.com to ask what the readings mean yet?
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Old 12-08-2006, 04:13 PM   #7
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I tested my tap and got .34 ppt and .63 ms.
I will sned the email, thanks for the advice, both of you....PS I am on well water, if that makes a difference.
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Old 12-08-2006, 04:56 PM   #8
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no on the RO/DI finished product
FYI I called them for you they said it was worthless on reef tank water that is why I posted the long and short above
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Old 12-08-2006, 06:12 PM   #9
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Quote:
Originally Posted by Sadielynn
no on the RO/DI finished product
FYI I called them for you they said it was worthless on reef tank water that is why I posted the long and short above
Thanks for calling, I had also sent an email and they responded really fast. Here is what they said:
Scott,

The meter measure conductivity and TDS (total dissolved solids). The
lower
the read the purer the water. If you are using an RO system for your
tanks
the reading going into the RO filter will be higher than what is coming
out.
The Dist 6 only reads up to 19.99mS. Your salt water tank is going to
read
out of the meters range.
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