AELAB DO/BOD/OUR/SOUR Meter A180/181 – High-Precision Oxygen Analysis

The A180 and A181 Professional DO/BOD/OUR/SOUR Meters are precision instruments designed for accurate measurement of dissolved oxygen (DO), biochemical oxygen demand (BOD), oxygen uptake rate (OUR), and specific oxygen uptake rate (SOUR) in water samples. The A180 model provides advanced measurements including DO, BOD, OUR, and SOUR, while the A181 model focuses on dissolved oxygen and oxygen saturation percentage.

These meters feature 1 or 2-point push-button calibration using either air-saturated water or a zero-oxygen solution for quick and accurate results. To ensure precise DO measurements, the meters compensate for salinity and barometric pressure. The meters also offer selectable testing times, which are used for OUR and SOUR calculations, as well as an Auto-Read feature that locks the measurement once the endpoint is reached. A stability indicator ensures that you only record stable readings, and a calibration due reminder prompts you to perform regular calibrations for optimal performance.

With a memory capable of storing up to 1000 data sets and USB communication, data can be easily transferred to a computer for further analysis. Interval readings allow for automatic data logging, while password protection prevents unauthorized adjustments to settings. The meters are designed for ease of use, with automatic resetting to factory defaults and included accessories such as a dissolved oxygen probe, membrane cap, electrolyte solution, electrode holder, and power adapter.

Feature:

• 1 or 2 points push-button calibration using the air-saturated water or zero oxygen solution.
• Salinity and barometric pressure compensations ensure the accurate DO measurements.
• Selectable testing time, beginning/ending DO are used for the OUR and SOUR calculations.
• Stability indicator shows when a measurement is recognized as stable.
• Calibration Due Reminder prompts user to calibrate the meter regularly.
• Auto-Read feature senses and locks the measurement endpoint.
• Interval Readings automatically send the measured data to the computer or printer.
• Password protection prevents the unauthorized calibration and settings.
• Expanded memory stores and recalls up to 1000 data sets.
• Stored readings can be transferred into the computer by USB communication interface.
• Reset feature automatically resumes all settings back to factory default options.

🔬 How It Works?

The A180/181 meters function by detecting the concentration of dissolved oxygen via an electrochemical sensor. Calibration is performed using either a zero-oxygen solution or air-saturated water to ensure accurate baselines. Salinity and barometric pressure corrections enhance measurement reliability. For A180, the system also calculates BOD, OUR, and SOUR values by logging DO levels over time. The Auto-Read function locks the measurement once stability is achieved, ensuring data integrity.

💡 Advantages

• 📊 High Accuracy & Reliability: Advanced compensation algorithms for salinity and pressure

• 🧠 Smart Features: Auto-read, stability indicator, and calibration reminders ensure lab-grade performance

• 💾 Robust Data Handling: USB export and 1000-memory data storage

• 🔐 Secure Settings: Password-protected access to prevent unauthorized changes

• 🧰 Complete Kit: Includes DO probe, membrane cap, electrolyte, and accessories

🔍 Recommended Models by Use Case

• A180 – Best for research labs and industrial applications requiring BOD, OUR, and SOUR analysis

• A181 – Ideal for general DO and %O2 saturation monitoring in educational or environmental testing labs

🧪 Ideal For

• Environmental and Water Quality Labs

• Food and Beverage Testing Labs

• Pharmaceutical QC Departments

• University and Research Institutions

• Wastewater and Effluent Analysis

❓ FAQ – Lab-Focused

Q: How is calibration performed?
A: Using air-saturated water or a zero-oxygen solution for 1 or 2-point calibration.

Q: Is the device GMP compliant?
A: While not GMP-certified out-of-box, it supports good laboratory practices with password security, data logs, and audit-friendly USB export.

Q: How long is the warranty?
A: AELAB typically offers a 1-year warranty. Please verify with your distributor or support team.