Pics!! Does This Tds Meter Look Ok???

Does this one look ok. I dont want to spend a lot on a Truncheon. Will this atleast be sufficiet to tell me how much Nutes to add to my Hydro. Opinions please!!! It only cost $11.99 on ebay!!!





Brand New - HANNA Primo TDS Meter

One free 20ml 1382 ppm TDS calibration solution and two free batteries included.

• High accuracy <LI class=text4>Exceptional linearity over the entire range
  [*]Automatic calibration with the press of a button

The Primo provides a fast and dependable way to measure the Total Dissolved Solids level in your water samples. It is ideally suited for the rigorous demands of water quality professionals, who will appreciate the practicality of the Primos easy-to-read Liquid Crystal Display when demonstrating the before and after results of conditioning and filtration systems. Temperature is compensated automatically to ensure the readings are consistent to the standard or reference temperature. Operating and routine maintenance has never been easier. The Primo TDS uses a single button at the top of the meter. Press it once and the meter is powered and ready for use. Press and hold the button for a few seconds and the Primo automatically enters calibration mode. Simply open a sachet of the calibration solution, dip the probe and within seconds, the meter recognizes the calibration solution and calibrates itself!

Primo is supplied complete with batteries and instructions.


Specifications:

Range​

1999 ppm (mg/L)

Resolution​

1 ppm (mg/L)

Accuracy (@20&#176;C/68&#176;F)​

&#177;2&#37; Full Scale

pH Calibration​

Automatic at 1382 ppm

Temp. Compensation​

Automatic, from 0 to 60&#176;C (32 to 140&#176;F)

Battery Type / Life​

2 x 1.4V, 200 hours of continuous use

Environment​

0 to 50&#176;C (32 to 122&#176;F); RH 90%

Dimensions​

180 x 50 x 25mm (7 x 2 x 1")

Weight​

80 g (2.9 oz.)

Resources:Primo PrimoManual

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A simple and affordable pocket TDS meter, One 20ml 1382 ppm TDS calibration solution included, Higher Range (1-1999ppm) than TDS1, Automatic calibration with the press of a button, Best-Price-Anywhere!
Authorized HANNA dealer - Brand new meter with full warranty.
Please check out my for more Great Deals on TDS/pH/Temp meters.

Hanna is used by alot of schools and universities in the classroom. Hanna is respected as a decent mid-range meter. Although not the best, it should be plenty accurate enough for our growing purposes. Its what I ordered... already have the Hanna PH meter and I't couldn't work any better! Hope this helps,

Peace

So what do you think is the best? Milwaukee? can you leave the milwukee in the dwc bucket? are there different kinds of probes for dirt or one for hydro?

It only reads TDS/EC of the moisture/water in the soil. Typiv cally it is easiest to just take a reading of the drainage from soil. With hydro the probe can just be palced into the nutrient solution. A Horticulturalist would normally take a sample of moist soil and use a vacumn pump or syringe arrangement to draw water from the soil sample through a filter. They then test the TDS or EC of this resulting nutrient solution.