DRB200 COD digester/Digester is a digestion device recently developed by Hashi Company, which can digestion COD, TOC, total phosphorus, total nitrogen and other water samples. The digestion time and temperature can be selected in the range of 0-480 minutes and 37-165℃, respectively. In order to meet the needs of wider use, two heating blocks or two independent heating blocks can be configured in the DRB200 COD digester. Under different/same temperature and different/same time setting conditions, the digestion of two independent heating control modules can be carried out. The heat block is available in three sizes for bar-coded TNTplus prefabricated reagents (13mm), ordinary TNT preloaded tubes (16mm), and metal digestion preloaded tubes (20mm).