Something care, but very accurate and reliable !!!

Hello There,
I bought the thing at the pH value in the aquarium to measure.
In addition there was 2 buffer solution powder, which can be used to calibrate the part.
Since I use the thing every day, I have the meter calibrated every day.
In addition, I have bought a pH meter maintenance and calibration set,
in order to have a comparison with the supplied buffer solutions.

In each of the following day, when re-measurement, the device had a deviation of +/- 1 to 1.5.
This deviation was less with each recalibration.

When I then some of the electrodes - were storage solution in the cap and the next day
again carried out a measurement, the difference was only in the range 0.2 +/-.

If you have a little patience and the unit maintains, it may well provide very highly accurate results,
Sorry, no electrode storage solution is, so you must buy extra to this.

All in all, this device highly recommended, especially for this price.