BOD TRACK APPARATUS
Made in Hach - USA

The BODTrak apparatus features easy set-up, quick sample preparations, no titration dilutions. The unit gives results directly in mg/ l and at any time during the test the BOD rate can be viewed directly on the LCD display.

Faster than Dilution Method Constant stirring in the bottles supplies additional oxygen to the sample and provides bacteria with greater exposure to
food. This results in more rapid respiration and consumption of oxygen. Results comparable to the dilution method ( BOD5) can be achieved in only two to three days. Use these results for process control.†
† The BODTrak II method is not approved by the USEPA for NPDES reporting purposes.
BOD Results that are Easy to Monitor
The BODTrak II Apparatus has a large graphic display that continuously updates results. View the results at any time during the test. The instrument plots a curve of BOD over time. To review the data in detail, simply move a cursor
along the curve to display results for any stored data point.
Standalone Operation
The apparatus autom atically ends the test and stores the results after the chosen test length of five, seven, or ten days. This eliminates the need to be present when the test is complete.
DO Probes and Titrations are Eliminated
The BODTrak II Apparatus measures BOD using the respirometric method.
Each sample bottle is connected to
a pressure sensor in a closed system. As bacteria consume oxygen in the sample, the pressure in the bottle headspace drops.
This pressure change correlates directly to BOD. By measuring pressure changes instead of dissolved oxygen levels, the need for probes and titrations is eliminated.

Continual display of results in mg/ l BOD
Auto shut off once test completed
Collects and stores data in non-volatile memory
Mercury free
Comes with six 473mL amber glass BOD bottles, power supply, six magnetic stir bars, 50 BOD nutrient powder, 50 lithium hydroxide powder pillows and manual

Improvements of the BODTrak II Apparatus
The BODTrak II Apparatus is a re-engineered version of
Hach’ s BODTrak Apparatus.

Improvements to the old system include:
• Greaseless bottle seals
• Larger graphic display screen
• Improved stirring
• Smaller footprint
• Improved procedures with expanded options
• Bottle fences to prevent tipping of bottles and provide tubing management during storage
• Auto-switching power supply
• Improved temperature control

Specifications*
Range :
Selectable: 0 to 35, 0 to 70, 0 to 350,
or 0 to 700 mg/ L BOD ( Biochemical
Oxygen Demand) .
Capacity : Six 492-mL bottles

Precision :
For a standard containing 150 mg/ L
each of glucose and glutamic acid,
testing 44 samples obtained a mean of
235 mg/ L BOD with a 95% confidence
limit of distribution of 11 mg/ L ( or a
range of 224 to 246 mg/ L BOD)

Drift : < 3 mg/ L BOD in 5 days
Resolution : 1 mg/ L BOD
External Power Supply
Input: 110 to 240 V, 50/ 60 Hz
Output: 24 V, UL CSA, and TUV
approved
Operating Temperature 20º C ( 68º F)
Storage Temperature 0 to 40º C ( 104º F)
Dimensions ;
28.9 x 26 x 9.8 cm ( 11.4 x 10.3 x 3.9 in.)
Weight 4 kg ( 8.8 lbs.)