LOVIBOND BD 600 BOD Measurement System
Product Overview
The BD 600 is a precise respirometric system manufactured by Lovibond/Aqualytic, designed for the determination of Biochemical Oxygen Demand (BOD). This complete system is optimized for up to six measuring points and is suitable for process control or as a highly effective secondary test to the traditional Dilution Method, resolving many associated issues. The system is GLP compliant and specifically optimized for Biodegradability tests, including OECD 301F and standard BOD tests.
Measurement Principle and Accuracy
The BD 600 utilizes the manometric principle of respirometry. This method allows for precise BOD measurements by relating oxygen uptake to the change in pressure within a sealed vessel while maintaining a constant volume.
1. Operation: During the measurement, the microorganisms in the wastewater consume dissolved oxygen. This consumption is replaced by air oxygen from the gas compartment within the test bottle.
2. CO₂ Absorption: The carbon dioxide produced metabolically by the bacteria is chemically bound by potassium hydroxide (KOH) solution contained in a seal cup inside the bottle.
3. Pressure Measurement: This process results in a pressure drop directly proportional to the BOD value, which is measured by the mercury-free electronic pressure sensor and displayed directly in mg/l O₂.
A significant advantage of this system is that no sample dilution is required for measuring up to 4000 mg/l BOD, unlike traditional methods.
Key Operational Features
The system is designed to be user-friendly, minimize potential errors, and simplify data interpretation.
Display and Data Interpretation The BD 600 features a large, brilliant graphic display that provides results directly in mg/l BOD. Operators can easily interpret data points and trends through a graphical representation of the BOD curve shown on the screen. Each sensor head also features an integrated LED, allowing operators to visually confirm which sample data is currently displayed, reducing confusion and error potential.
Automation and Convenience Measurements are taken automatically and stored at regular time intervals in the sensor memory, meaning operators do not need to be present at the completion of the test, eliminating the need for mandatory weekend trips to the lab. The system includes an Autostart Function which ensures measurements begin only after the sample reaches the correct temperature, minimizing fluctuations that could skew results.
Data Management and Traceability The BD 600 unit includes a protected lifetime memory of 1 GB and supports data export via USB stick, SD card, or USB cable connection to a PC for further evaluation. The interface allows easy assignment of identification codes or sample names during setup, ensuring traceability throughout the measurement process. A supplied remote control allows operators to display measurement data without opening the incubator door, maintaining consistent sample temperature.
Applications
The BD 600 BOD Measurement System is a valuable tool across several industries and laboratory settings, especially for monitoring biologically degradable organic matter in water.
• Waste Water Treatment Plants
• Determination of Biological Activity
• Analytical Laboratories
• Science & Research
• Chemical Industry
• Food and Beverage Industry
• Municipalities
• Marine Industry
Technical Specifications
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Feature
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Specification
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Model
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LOVIBOND BD 600 (BSB Measuring System)
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Part Number
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2444460
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Measuring Stations
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6
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Measuring Principle
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Manometric; Mercury-free; Electronic pressure sensor; Respirometric
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Measuring Ranges (BOD)
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0 – 40, 0 – 80, 0 – 200, 0 – 400, 0 – 800, 0 – 2000, 0 – 4000 mg/l O₂
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Measurement Period
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User-selectable, between 1 and 28 days (Extended duration up to 90 days possible)
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Data Storage
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Up to 672 results (depending on measurement period); Protected lifetime memory (1 GB)
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Storage Interval
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Hourly (1st day); Every 2 hours (2nd day); Daily (3rd – 28th day)
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Display
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Backlit Graphic Display (128 x 240 pixel, 45 x 84 mm)
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Interfaces
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USB Host (USB stick), USB Device (computer), SD-Card, Bluetooth (optional)
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Autostart Function
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Yes (After temperature equalisation of samples)
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Power Supply
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100 - 240 V / 50 - 60 Hz (Mains or battery-backed)
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Clock
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Real Time Clock and Date
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Portability
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Benchtop
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Compliance
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CE; EMC according to DIN EN 61326; GLP Compliant
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Protection Class
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IP 54 (sensor head) (Also cited as IP 53)
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Dimensions (L x W x H)
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375 x 181 x 230 mm (Including stirring unit)
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Weight
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5775 g (complete with stirring unit, bottles & batteries)
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Delivery Scope (Standard Accessories)
The BD 600 complete system (Item number 2444460) for 6 measuring points includes:
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Component
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Description
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Main Unit
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BD 600 base unit with 6 sensor heads, control unit with batteries
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Stirring System
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Inductive magnetic stirring system
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Power Supply
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Power supply unit including Y-cable for common power supply of BD 600 and the stirring system
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Sample Bottles
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6 sample bottles (often 500 ml brown glass)
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Sealing
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6 rubber gaskets or quivers
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Stirring Rods
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6 magnetic stirring rods
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Chemical Reagent
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50 ml potassium hydroxide solution 45%
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Chemical Inhibitor
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50 ml nitrification inhibitor solution
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Overflow Flask 1
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1 overflow volumetric flask 157 ml
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Overflow Flask 2
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1 overflow volumetric flask 428 ml
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Control
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1 remote control
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Documentation
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Instruction manual and warranty statement
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