* Designed for direct automatic determination of the Biochemical Oxygen Demand.
* Well-proven tespirometric analysis in combination with a precisely tempered
  water bathis unsurpassed in its precision. 
  The method used is the oxygen determination method  by Coulomb
* The system complies with the requirements of the German standard
  method for testing water, effluents and mud, DIN 38409-H52
* Day in and day out, more than 1000 units in use prove their 
  reliability for BOD measurings.

The unit registers aerobe decomposition of organic material over time. 
The BOD decomposition curve allows conclusions to be drawn regarding 
the existence of inert materials, inhibitors or toxic substances.
These influence the metabolism of aerobe microorganisms in different ways. 
Furthermore, the BOD curve may show e.g. whether the reduction of oxygen
in the sample had already set on before testing, what speed oxidation takes
place at or whether a nitrification process has set on.
* Potential complete aerobe and biological decomposition of organic material
* Decomposition reactions of chlorohydrocarbons(CHC) in water and soil
* Biological activity of compost, wrapping and refuse
* Activity and growth of microorganisms

동작 원리 (Mode of Operation)
(1)Carbon dioxide is produced by microorganisms and their metabolism
   in the reaction vessel.
(2)The carbon dioxide is directly bound to the CO2 absorber
   inside the reaction vessel.
(3)In the closed measuring unit, a vacuum is produced to which
   the pressure gauge reacts.
(4)The oxygen generator is activated by the control unit according to
   Coloumb’s Law, and the existing vacuum is balanced with the oxygen produced.
(5)When the vacuum is compensated, electrolysis is terminated. 
   According to Faraday’s law, the amount of oxygen freed by electricity
   is proportional to the amount of electricity(product of the strength
   of electric current and time).
(6)The B.O.D. curve of the tested sample is determined from the amounts
   of sample and electricity.

* Control Unit
  115 VAC / 50~60 Hz and 230 VAC / 50~60 Hz, for controlling up to
  12 measuring units simultaneously.
* Heated Water Bath
 ㆍThe Water bath has room for a maximum of 12 measuring units.
* Measuring Unit
 ㆍReaction Vessel(500 ml)
   with a CO2 absorber integrated with the glass fitting.
   The test sample is circulated in the reaction vessel by a magnetic stirrer.
   Reaction vessel with volumes of 250 or 1250 ml are available on request.
 ㆍOxygen Generator
 ㆍPressure Gauge
* Evaluation Software
 ㆍThe software for data storage and analysis requires MS Windows 3.1 or higher.
   All printers supported by MS Windows can be used.

* Measuring Unit : 12 
* Max. Measuring Units(Software) : 48
* Filling Volume Water Bath : 60 ~ 70 Lit.
* Temperature Stability : 0.1 K
* Cooling power, can be automatically : 200/450 W
* Switched by Temperature Control Unit : 
 ㆍ Dimensions : w315xd610xh460 mm
 ㆍ Space Requirements : w315xd610xh460 mm
 ㆍ Weight : (empty) 87 kg, (filled) 157 kg
 ㆍ Perm. Ambient Temperature : 0℃ to +40℃ at 80% humidity
 ㆍ Supply Voltage / Frequency : 115 or 230 VAC 50-60 Hz
 ㆍ Pressure(Pressure Gauge) : 0.2 mbar
 ㆍ Stirring Power : 80W (2x40W)