ADWA (Advanced Digital Water Analysis) is a Hungarian company that produces high-quality devices for laboratory water testing. The Growtent store offer includes a wide range of TDS, pH and ORP meters. We offer both small pocket testers as well as larger portable meters and large table meters. ADWA measuring devices are ideally suited for water analysis in hydroponic systems, as well as measurement of fertilizer solutions with water, used for watering plants planted in coconut soil or soil. In addition to complete EC and pH meters, we also have replaceable electrodes for meters. In our store's offer you will also find a number of liquids for meter calibration. Enjoy your shopping.