After identifying the problems of ph orp meter, Shanghai Boqu Instrument Co., Ltd. will arrange the most professional after-sales team to help you. By following the instruction manual, we are responsible for repairing the products for free during the warranty period. During the usage of the product, you can send the product back to us for repair. Once the product is out of warranty period, we will charge you for the parts and accessories.

With strong capacities of designing and manufacturing submersible pressure transducer, Boqu Instrument has taken up a reputable position in the industry. Boqu Instrument has created a number of successful series, and dissolved oxygen meter is one of them. BOQU dissolved oxygen meter goes through a professional design process. It is designed considering mechanical structure, control system, the performance of components and parts, etc. Adopting photoelectricity coupling and isolation technology, it holds strong resistance to interference. The product will hold up for years. The materials used are all solid woods, which means they can withstand cracking and warping. A high-temperature and high-pressure system inside the product speeds up the reaction process, therefore improving the work efficiency.

BOQU will strive to become one of the world's top brand in the sales volume of sludge interface meter. Welcome to visit our factory!