BOD Analyzer: Respirometric BOD Apparatus - 0 to 700 mg/L BOD - 6 Sample Bottles

BODTrak II Respirometric BOD Apparatus for Faster Wastewater BOD Testing

The classic dilution method for BOD ties up an analyst with dissolved oxygen readings, dilution series and titrations, and a single error can waste five days of work. The Hach BODTrak II Respirometric BOD Apparatus measures BOD by the manometric (respirometric) method in a closed system, so pressure change in the bottle headspace tells you how much oxygen the bacteria have consumed.

With constant stirring in all six bottles, the BODTrak II Respirometric BOD Apparatus gives results comparable to the dilution method in two to three days for process control in municipal and industrial wastewater plants. Note from Hach: the method is not approved by USEPA for NPDES reporting purposes.

Technical Specifications

The core specifications for the Hach BODTrak II Respirometric BOD Apparatus are listed below.

• Product number: 2952400
• Measurement method: manometric (respirometric)
• Range: 0 - 700 mg/L BOD
• Capacity: six 492 mL bottles (BOD bottle listed as 473 mL, 6 pcs)
• Drift: < 3 mg/L BOD in 5 days
• Test length: 5, 7 or 10 days, ends and stores results automatically
• Interface: RS232
• Input voltage: 110 - 240 V, 50/60 Hz; output 24 V auto-switching power supply
• Dimensions (H x W x D): 98 x 289 x 260 mm
• Weight: 4 kg
• Manufacturer warranty: 12 months

Standard Accessories Included

• BODTrak II apparatus
• North American and continental European power cords
• Auto-switching power supply
• Six bottles and six magnetic stir bars
• Six seal cups and spatula scoop
• BOD nutrient buffer pillows
• Potassium hydroxide pellets

Items Excluded

• BOD incubator for holding samples at 20 °C (confirmed at quotation)
• Seed inoculum and additional reagents for long-term use
• Printer or PC software

Pre-installation Requirement

• Temperature-controlled incubator or room that holds the bottles at the test temperature
• Stable 110 - 240 V mains supply
• Level bench space for the instrument and six bottles

Key Benefits

Efficiency

No DO probes and no titrations: just pour sample and nutrient buffer, connect the bottles and start. The BODTrak II Respirometric BOD Apparatus stops the test by itself at the chosen length, so nobody has to be in the lab on day five. See the Hach BODTrak II product page for method notes.

Accuracy

Each bottle has its own pressure sensor and the large graphic display plots BOD against time, so you can move a cursor along the curve and check any stored data point. User calibration is not needed. Pair it with our Memmert compressor cooled incubator for stable incubation temperature.

Safety and comfort

Greaseless bottle seals, bottle fences that stop bottles from tipping and a closed measuring system keep the bench clean and reduce handling of wastewater samples.

Key Features

• Six sample channels with improved stirring
• Large graphical display with live BOD curve
• Greaseless seals and anti-tip bottle fences
• Selectable 5, 7 or 10 day test lengths
• Small footprint and auto-switching power supply

Solving Common Lab Problems

Dilution BOD takes too much analyst time? The BODTrak II Respirometric BOD Apparatus removes DO readings and titrations from the routine.

Need quicker process control data? Stirred bottles speed up oxygen uptake and give comparable results in two to three days.

Worried about tipped bottles and grease? Bottle fences on the BODTrak II Respirometric BOD Apparatus and greaseless seals solve both.

Warranty & Support

We provide a 1-year manufacturer's warranty covering parts and labor. Technical support, installation assistance, and operational training are also available. Replacement parts and consumables are available throughout the product's service life.

Request a Quotation or Technical Datasheet

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