Inline TDS Meter.

[linda lee]

Who has one?
Brand name?
Link?
Pros?
Cons?

We bought one, but instructions say nothing about calibration. I don't know if it's accurate or not.

 

[serpent]

I have the

 

[seedless reefer]

I see the calibration screw on the back I guess you would just submerge the leads in some kind of fluid to calibrate?

 

[jason sartain]

I have the same meter and love it also, I have 35-45 incoming and 0-4 output.I'm not sure what to calibrate it with but I know some of our sponsors are using it and swear by it.
I wonder if you could test it with distilled water?!?

 

[kwl1763]

They are very good. I've had one for years and it is right on the money. Incoming is ~50 and when output hits 1 it's time to change the DI.

 

[derek_s]

kwl1763;299996 wrote: They are very good. I've had one for years and it is right on the money. Incoming is ~50 and when output hits 1 it's time to change the DI.

Change the DI resin or the carbon blosck/sediments? I have always wondered what is an appropriate schedule for replacing the various components. I have about 70 TDS incoming on average.



I too have one of those inline TDS meters. Cons? non that I can think of. I think they are relatively cheap, easy to install, good on battery life, and accurate.

 

[seedless reefer]

But the question remains how can one feel comfortable that it is correctly calibrated from the factory?

Should the outflow probe be calibrated in distilled water or something?

 

[acroholic]

Seedless Reefer;300013 wrote: But the question remains how can one feel comfortable that it is correctly calibrated from the factory?

Should the outflow probe be calibrated in distilled water or something?

I would do it that way. If you know the brand, a quick Google Search might net you the instructions from the manufacturer's website.
Dave

 

[kwl1763]

If you have new DI resin and have recently changed your prefilters on your RO and your membrane is not over a couple years old the it can be reasonably assumed you have zero TDS coming out. That's how I calibrate mine.

If it is off by one or two so be it.