A re-engineered version of the older BODTrak system, the upgraded BODTrak II apparatus helps achieve results comparable to the dilution method in 2-3 days.
Hach’s BODTrak II apparatus offers several advantages including reduced total test time, quick set up, easy monitoring of test results and standalone operation among others.
The Hach BODTrak II apparatus is easy to set up and allows for quick sample preparation for BOD analysis. The user simply has to pour a measured sample of wastewater and nutrient buffer into each of the six BODTrak II bottles, connect the bottles to the instrument’s pressure sensors, select a measurement range, and incubate.
Faster than the dilution method, the BODTrak II apparatus features a large graphic display that continuously updates results for easy monitoring during the course of the test. The apparatus automatically ends the test and stores the results after the chosen test length of five, seven, or ten days, eliminating the need for the user to be present when the test is complete.
The BODTrak II apparatus measures BOD using the respirometric method wherein each sample bottle is connected to a pressure sensor in a closed system. As the bacteria consumes oxygen in the sample, the pressure in the bottle headspace drops, with the pressure change correlating directly to BOD. By measuring pressure changes instead of dissolved oxygen levels, the need for probes and titrations is eliminated.
Key enhancements in the BODTrak II apparatus:
- Greaseless bottle seals
- Larger graphic display screen
- Improved stirring
- Smaller footprint
- Improved procedures with expanded options
- Bottle fences prevent tipping of bottles and provide tubing management during storage
- Auto-switching power supply
- Improved temperature control