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There are too many standard COD digesters, how to choose them? Which is better?

There are many manufacturers that produce standard COD digesters. When purchasing, we should first consider the quality of the instrument, the materials of the heating plate, electric furnace wire and condenser tube, the treatment of the instrument shell, the reasonable design of the temperature control instrument and the convenience of operation. Then we should consider after-sales service, instrument price and upgraded products of standard COD digester. From the point of view of our users, the KHCOD- 100 model of Nanjing Kehuan Analytical Instrument Co., Ltd. is very good. Our system (.