| abstract |
(57) [Summary] In a BOD biosensor measurement device using a microorganism sensor, when replacing a membrane with immobilized microorganisms with a new one, immediately start operation with a refrigerated microbial membrane attached, There is a problem that it takes several hours to several days for the initial sensor output to gradually increase and become stable, A solution was desired. Before mounting a refrigerated microbial membrane on a microbial sensor, the microbial membrane is allowed to stand for 24 hours in a temperature range from 15 ° C. to the operating temperature of the apparatus, and suppresses the growth of microorganisms in a buffer solution. By adding sodium azide as an inhibitor, the sensor output could be stabilized early within 12 hours. |