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How to Use Dissolved Oxygen Meter?

How to Use Dissolved Oxygen Meter?


In water quality testing, one instrument is a crucial tool for professionals and enthusiasts - the dissolved oxygen meter. Whether you're monitoring an aquarium, assessing water quality in a pond, or conducting environmental research, a dissolved oxygen meter can come in handy.

What is a Dissolved Oxygen Meter?

Dissolved oxygen (DO) meters are used in the measurement of the amount of oxygen dissolved in water. Dissolved oxygen is a crucial indicator of both the ecological status of the water and its capacity to host fish. These meters are used for several services, such as environmental monitoring, water treatment, and aquaculture.


Choosing the Right Meter

The market is awash with various types of DO meters, ranging from simple handheld units to more sophisticated, multi-parameter devices. The right device is which fits your needs. For general use, a portable, handheld DO meter is often sufficient. If you're into more detailed analysis, consider a meter that offers additional features like temperature and salinity measurements.

Guide to Using Your DO Meter

Step 1: Calibration

Before use, calibrate your meter. This process involves exposing the sensor to a known oxygen concentration (usually in the air) and adjusting the meter to read correctly. Follow the manufacturer's instructions for calibration, as this step is crucial for accurate readings.

Step 2: Prepare for Measurement

If using a probe-style meter, ensure the probe's membrane is intact and free from dirt or damage. For optical DO meters, ensure the sensor cap is clean.

Step 3: Taking the Measurement

Immerse the probe or meter in the water. Avoid going anywhere near the sides or the bottom of the container to prevent contamination. Gently stir the probe in the water, or if the meter is stationary, ensure a water flow across the sensor.

Step 4: Stabilization and Reading

Wait for the reading to stabilize. Depending on the meter, this may take a few seconds to a minute. Once stabilized, note the reading displayed. It's often measured in milligrams per liter (mg/L) or as a saturation percentage.

Step 5: Temperature

Temperature can affect DO levels. Many meters automatically compensate for temperature variations, but it’s good to note the water temperature during measurement for more precise data interpretation.

Step 6: Maintenance

Post-measurement, rinse the probe with distilled water and store it as recommended. To make your meter work for longer, you should pay attention to regular maintenance.

Interpreting DO levels can vary based on your application. Generally, a DO level of 6-8 mg/L is considered healthy for most aquatic life, but this can vary. Lower levels might indicate pollution or issues with water quality.


You can often face some issues. Some common challenges that you might face during the application are:

● If you get unusually high or low readings, recalibrate your meter.

● Check the batteries and probe's condition if the meter seems unresponsive.

● For erratic readings, ensure no air bubbles on the probe’s sensor.


World-Class Water Quality with BOQU Instrument

At BOQU water quality sensors supplierwe're more than just a company; we're a dedicated team passionately committed to the vital cause of water quality. Since our inception in 2007, we've been laser-focused on one goal: to guarantee you have the best and not merely good water quality analysis possible.


We craft not just products but solutions for you. It has been a consistent endeavor as we strive to come up with an advanced technology for water quality solutions that is dependable, easily understood, and usable. Learning how to use advanced technology should not be complex. That’s why we manufacture these sophisticated yet easy-to-use tools.


Our commitment has propelled us to a leadership position in water quality measurement. BOQU Instrument has grown significantly since 2007, spreading its wings across the globe. Our water quality analyzers are now common in diverse industries, ranging from municipal drinking and wastewater management to sectors like food and beverage, power plants (including Steam and Water Analysis Systems, SWAS), swimming pools, pharmaceuticals, sterilization, and more. This wide-ranging application underscores our versatility and ability to cater to water quality needs.


Choosing BOQU Instrument means more than just acquiring a product; it's about gaining a partner invested in your success. Our commitment to you extends beyond sales. Our 24/7 help and experienced guidance are accessible to you. Ask us anything, from product questions to water quality management guidance to technical help.


We have a range of dissolved oxygen meters for our clientele. From analyzers to industrial meters, you can purchase everything here, and we assure you that the quality is nothing short of excellence. Our reputation exceeds ours, and we’re proud to claim that once you come to us, we can help you with any instrument purchase in the water arena. So, visit our website and let us know how we can help you make your water processes easier and more accurate with our top-quality products.

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