Chemical oxygen demand (COD) is surface water, industrial waste water, sewage, etc of the waters will measure project, it is reflected by the water quality oxygen consumption sexual material pollution condition of important indicators, it is also the national implementation of total emission control is one of the key indicators.
But water reflux digestion process is a temperature, time control relatively strict process, grasps the bad will make analysis the result deviation.
My company widely listen to use the user's opinion, reference GB11914-89 method out of this instrument. To control temperature heater instead of high power electric furnace heating, with air cooling instead of water condensation, automatic temperature control, micro boiling state 120 minutes automatic countdown, digestion end automatic stop and other technical means to achieve the operation method and national standard method echo, a key operation, automatic digestion, saving energy and reducing consumption, the use of simple convenient operation, but also avoid the non GB method measuring COD causes the technology dispute.

The main technical index
(1) type: 106
(2) the display mode: Color screen
(3) the accuracy of temperature control: ± 2 ° Or less
(4) hole room temperature parallelism: ± 2 ° Or less
(5) the design temperature: 0-300 °
(6) resolution bottle capacity: 350 ml
(7) temperature control: 0-250 °
(8) time control: 0-150 min adjustable, can be single span control
(9) resolution bottle size: Mm * 200 mm
(10) rated power: 2400 w
(11) heating element: Nickel chromium wire, 12 heating single span
(12) external dimensions: 51 * 50 * 21
(13) heating up time: 15-20 min
(14) cooling ways: Air cooling
(15) sample quantity: 12