Review on π§ Digital Water Quality Tester with Calibration Kit - LiZi pH Meter by Wiktor Pozna α
Dissatisfied with this product, bad to use.
I did it according to the instructions: I took 250 ml of distilled water with a temperature of 26 degrees, diluted the bag with ph 4.01. The device showed 3.5. I tried to turn the screw - the values ββ\u200b\u200bdid not change. I did a similar operation with the second solution (ph 6.86) - the result is 6.0 Well, how to use this tester then? By the way, turning the screw is a separate art: it is easier to remove the upper black part with batteries, so that at least you can see where to insert the screwdriver. Too bad it doesn't affect anything.
- shows something Comes with two calibration bags
- The calibration screw does not work - you have to keep the error in your head No package 92022
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