Given the overwhelmingly positive reviews I've ordered this pH meter. For the price you can not lose much either. Or is it? Those who rely on the Anzige, is leaving. It's not even begin to be calibrated. The buffer solutions I have made exactly according to instructions with distilled water from the pharmacy. The pH of the buffer solutions I have ensured with high precision droplet tests. Nevertheless, it can not be calibrated. For namely two setting trimmer would be imperative, namely for offset and gain, however, this instrument has only one trimmer. Without the accurate setting both values (and for some reference measurements are required) is any value read unusable. The instructions in the procedure described (in English) is therefore absolutely useless. The measurements are not representative because there is completely different measurement results, if some days are between measurements. So if you want to measure the pH in sensitive areas, should take advantage of this device distance. My ended up in the bin, because I want to grab any packet for this price.
