How to read PPM or TDS meter???

[bramjansen]

ok, I got the RODI system and I got this PPM reader. It gives me a number of 33 for drinking water. How the heck do I read this thing! it has no directioons how to read. Do I need to recalibrate this? HELP!!!

[csellers]

Here is a link to an article that might help: http://www.reefkeeping.com/issues/2004-04/rhf/feature/index.php

[dhnguyen]

that 33 IS 33 PPM. You may still need to calibrate it according to the manufacturer's suggestion

[bramjansen]

It told me to add some 100 something when calibrating. I guess that would be it. In that case, the 33 would be 133 or more. So I want it at 0, correct??? Hope to hear some more feedback. Thanks!

[dhnguyen]

what exactly is "add some 100 something"?

Most TDS meters require a calibration fluid to adjust.
http://www.buckeyefieldsupply.com/showproducts.asp?Sub=149&showspecials=149

What brand and model is your TDS meter?

[bramjansen]

Its the Liquatec (liquatec.com) PM-3000

It says on Calibration:

Use 130 PPM (NaCl) standard solution for calibrating.

Dip the PM3000 into the calibrating solution and obtain reading. Insert a small screwdriver into the hole and adjust until the display reads 130.

What do I make of this???

[dhnguyen]

So... You need to get some 130 PPM (NaCl) calibration fluid and adjust the meter accordingly. Not sure where you could find that since most calibration fluid I've seen are in the 800+ PPM range. Maybe a call to Liquatec would help?


D.

[bramjansen]

Will do. Thanks a lot!!!

[Billybeau1]

dh, the finger in the nose is cute. :)

Gotta love the little ones. :D