Biochemical oxygen demand BOD determination is still one of the most important
parameters in water resource management. It can be used to evaluate the impact
of biodegradable substances in waters and waster water. With its OxiTop ® systems, WTW offers a unique, modular and mercury-free instrument system. It is not only suitable for BOD determination, but also for measuring biodegradability and depletion.

The advantages of OxiTop ® and OxiTop ® Control: simple operation, improved
controllability and non-toxicity, and measuring ranges of up to 400 000 mg/l BOD
(with OxiTop ® Control OC 110). As the measured pressure is automatically converted the values can be directly read as mg/l BOD.

OxiTop Control with OC 100 controller
Uses an IR remote control to manage up to 144 samples simultaneously. Dilution and volume factors are calculated automatically. Graphic display of the stored values can give greater information on the incubation process and can be a diagnostic tool. Incubation times fro 30 mins to 28 days are possible.

OxiTop Control with OC110 controller
As with OC 100 but giving even greater flexibility allowing variation of sample volume and incubation time. The OC 110 has a pressure mode allowing anaerobic incubations to be evaluated for CO2 and methane production.