BOD (Biological Oxygen Demand)
Labman produce a range of systems for analysing the Biological Oxygen Demand of water samples. The systems range from the budget conscious Mini system to the feature packed Maxi system, further information on the product range is available upon request.
The robots will automatically remove the cap from the BOD bottle, top up the bottle with seeded dilution water, take an initial DO reading and replace the cap. The process is repeated (with exception of the top up) after the incubation period to give the final DO reading allowing the BOD value to be calculated. If ATU addition is required for nitrification inhibition then this is available as an optional extra and is added to the bottle using a syringe pump for accuracy. The amount of ATU added is user definable for each sample. The system is able to cope with both common methods for seeding the sample; use of effulent which is added to the dilution reservoir by the operator before starting a run or the system can dispense a Polyseed solution directly into the bottle using a syringe pump.
The BOD systems will connect to any LIMS with a Comma Separated Variable (CSV) text file interface. The integrated CSV editor in the robot software will allow you to tailor the CSV file structure to ensure that it is correctly processed by your LIMS.
An ultrasonic liquid level detector is used to accurately determine the top up volume of the sample bottle when adding dilution water. This removes many of the common problems seen with optical or conductive sensors such as splashes due to the sensor being non-contact and much further away from the water.
Options include; dual arms for processing twice the number of bottles at the same time, ATU addition, Polyseed addition, barcode reading, sub-sampling from the original source bottle, any combination of physical chemistry tests.
Labman also offer custom built incubator systems which vary in size from 100 to 1000 bottles. Further information on the incubators is available on request.
Main Features
- Ethernet connectivity allowing remote operation and easy setup
- Single Probe Cycle Time (samples per hour) ~ 40 Intial DO, 80 Final DO
- Dual Probe Cycle Time (samples per hour) ~ 80 Initial DO, 160 Final DO
- Use your existing sample racks to maintain your consumable investments
- Scalable capacity from 20 - 100 samples on the robot bed
- Ultrasonic liquid level detection
- Easy to use software
- Control PC and monitor included
- 250ml or 300ml BOD bottles can be used
- All major standards covered, also MCERTs compatible
- Range of DO meters supported
Download PDF BOD Brochure here
Please contact us for more information or to ask about customised systems
