We are CHANNEL TECH based in Beijing, China. We are member of TradeKey.com since March, 2015. Our business is related to Measurement Instruments industry and we specifically deal in Agriculture instrument,plant instrument,soil instrument,environment instrument,Hydrology instrument. Please find our product details below: QT-PH220S Soil pH Meter Product description: QT-PH220S is a sophisticated but durable pen-like pH meter with independent electrodes. It can be used for several years if it is operated correctly. QT-PH06S/30S agricultural soil pH meter Product description: QT-PH06S/30S is a durable soil pH meter, it can be inserted into soil and measure soil pH rapidly. No batteries and no special maintenance needed for the meter. Thank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.