In this guide today, we are here with our in-depth review of the best dissolved oxygen meter. There are plenty of choices with multiple websites and therefore difficult to choose the best one. We recommend to read the guide and choose the one that suits your need as we review products based on the various options, features, price, quality and many more . To avoid this dilemma, we recommend to read this guide and review. It gives you insider information on how to choose the best dissolved oxygen meter for your needs and budget.
In this in-depth review guide, we will discuss about the best dissolved oxygen meter.
The Best dissolved oxygen meter
The Best dissolved oxygen meter
YSI DO200 Kit EcoSense DO 200 Dissolved Oxygen Meter Kit
$892.76
in stock
3 new from $879.00
Free shipping
Amazon.com
as of October 9, 2025 10:06 am
Features
- Battery: 1 x 9 v battery (included)
- Automatic temperature compensation|manual input for salinity and barometric pressure compensation|easy-to-replace screw-on cap membranes
- Dissolved oxygen accuracy: 2 percent fs
- Dissolved oxygen resolution: 0.01 ppm; 10 percent
- Meter type: portable
RCYAGO Dissolved Oxygen Meter with Electrode Filling Fluid
$155.95
in stock
Amazon.com
as of October 9, 2025 10:06 am
Features
- Dissolved oxygen meter is a precision instrument for measuring dissolved oxygen and temperature. The dissolved oxygen probe is a thin film with a polarographic sensor and a thermistor for temperature measurement and temperature compensation. The permeable membrane separates the measured solution from the sensing electrode but allows oxygen to pass through the membrane to react, and the concentration can be measured.
- Dissolved oxygen refers to the concentration of molecular oxygen dissolved in water, generally expressed in mg/L (ppm) and saturation percentage (%), which is the percentage of dissolved oxygen in 1L of water. The oxygen concentration of our dissolved oxygen meter is 0.0-40.0mg/L, most of the range of dissolved oxygen meters on the market is 0.0-20mg/L. When measuring and calibrating, needn't open the protective cover of the electrode, just put the electrode in the solution for measurement.
- Detachable probe, easy to replace, equipped with 6 probe protective covers and anaerobic water calibration powder. The film inside the protective cover cannot be taken apart. After using it for a period of time, the test value is inaccurate and the calibration is still inaccurate, and the membrane sleeve needs to be replaced.
- Adopts the digital screen display with backlight, which is more clear and convenient to read data. Auto power-off in 8 minutes if not using it. Low battery indication. Oxygen solubility will be affected by temperature, atmospheric pressure, and salinity. Our instrument with temperature compensation can meet normal use.
- It is very suitable for measuring the dissolved oxygen level and temperature in a wide range of aquariums, swimming pools, ponds, freshwater aquaculture, marine aquaculture, school teaching experiments, laboratory sterile environment, aquaculture, scientific research, and other fields.
Milwaukee MW600 LED Economy Portable Dissolved Oxygen Meter with 2 Point Manual Calibration, 0.0 - 19.0 mg/L, 0.1 mg/L Resolution, +/-1.5 percent Accuracy, 100 Percent Saturation Range
$318.75
in stock
11 new from $318.75
Free shipping
Amazon.com
as of October 9, 2025 10:06 am
Features
- Portable dissolved oxygen (DO) meter for educational, aquaculture, water analysis, and environmental analysis applications
- Two-point manual calibration, automatic temperature compensation from 0 to 30°C
- LCD screen
- Polarographic probe with 3m cable and screw-on cap membrane
Gain Express Professional Digital Large LCD Dissolved Oxygen DO Meter Water Quality Tester with ATC 99 Memory Function
$182.90
in stock
2 new from $182.90
Amazon.com
as of October 9, 2025 10:06 am
Features
- High-Precision DO Measurement – Large LCD displays dissolved oxygen (% or ppm/mg/L), temperature, barometric pressure (mmHg/kPa). Stability indicator ensures accurate readings for aquaculture, industrial, environmental, and educational applications.
- Smart & User-Friendly Functions – Auto temperature compensation, 99-data memory, hold function, low battery indicator, and selectable auto power-off (20–120 mins)
- Durable & Portable Design – Features a cost-effective Clark-type electrode with >12-month sensor life (with maintenance). Compact and lightweight, operates in 0–50°C environments.
- Wide-Range Multi-Parameter Testing – Measures DO (0~199.9% / 0~19.99 PPM / 0~19.99 mg/I), temperature (0–50°C), salinity (0–50ppt), and barometric pressure (500~1499 mmHg / 66.6~199.9 KPa) with high resolution (0.01ppm).
- Complete Professional Kit – Includes meter, probe, 4 AAA batteries, 5 Teflon membranes/O-rings, 2 electrolyte bottles, English manual, and a sturdy carrying case for immediate use.
Dissolved Oxygen Meter,Portable Oxygen Meter Range:0-40mg/L,Dissolved Oxygen Test Kit with Electrode Filling Fluid,Aquarium Water Test Kit
out of stock
Amazon.com
as of October 9, 2025 10:06 am
Features
| Part Number | 1 |
| Model | 1 |
| Size | NO Bluetooth |
RCYAGO Smart Bluetooth Dissolved Oxygen Meter
$196.70
in stock
2 new from $196.70
Amazon.com
as of October 9, 2025 10:06 am
Features
| Part Number | Bluetooth Dissolved Oxygen Meter |
| Model | Bluetooth Dissolved Oxygen Meter |
Hyuduo Dissolved Oxygen Meter, Digital Dissolved Oxygen Meter Analyzer for 0.040.0mg/L, Portable Oxygen Concentration DO Pen,PH Water Quality/Temperature Hygrometer
$81.29
out of stock
2 new from $81.29
Free shipping
Amazon.com
as of October 9, 2025 10:06 am
Features
- High accuracy, quick response, quick test results can be detected, any 0.040.0mg/L liquid can be tested.
- With automatic temperature compensation function, the temperature of the solution can be automatically compensated for 040, and the reading is accurate and stable.
- The dissolved oxygen meter is suitable for freshwater aquaculture, marine aquaculture, swimming pools, beverage factories, sewage treatment plants, and laboratories.
- The digital screen display with backlight makes the data read more clear and convenient.
- Small penshaped design, light and easy to move, you can test water anywhere to get the purest water.
YSI Model #: Pro20i-4 G Kit Dissolved Oxygen and Temperature Handheld with 4-Meter Integral (Non-Detach Each
$1,362.01
in stock
Amazon.com
as of October 9, 2025 10:06 am
Features
- Package Dimensions: 46.99 H x 6.35 L x 26.67 W (centimeters)
- Package Weight: 1.0 pounds
- Country of Origin : United States
Extech DO600 Waterproof ExStik II Dissolved Oxygen Meter
$309.00
in stock
3 new from $309.00
Free shipping
Amazon.com
as of October 9, 2025 10:06 am
Features
- Reliable Dissolved Oxygen Testing Anywhere - Measure DO quickly and accurately in labs, aquaculture tanks, or the field with a rugged waterproof ExStik design built for real-world conditions.
- Smart Auto Calibration & Compensation - Built-in salinity and temperature compensation ensure precise results without complicated setup, saving you time and reducing user error.
- Big, Bold LCD with Easy Readouts - Large digital display shows DO, temperature, and salinity clearly at a glance, even in low-light or outdoor environments where visibility matters most.
- Data Hold, Min/Max, and Memory Functions - Capture, recall, and compare readings instantly, making recordkeeping and compliance reporting more efficient during testing.
- Portable & Built to Last - Compact pocket-style meter with waterproof housing, replaceable electrode module, and sturdy design that stands up to fieldwork and frequent use.
AMTAST Portable Dissolved Oxygen and Temperature Meter DO Sensor Dissolved Oxygen Levels Tester, DO Range: 0~20.00 mg/L, 0~20.00 ppm
out of stock
Amazon.com
as of October 9, 2025 10:06 am
Features
- LCD Displays DO or Saturation O2 and Temperature simultaneously. Displays Maximum/Minimum value and data hold.
- Ideal for measuring dissolved oxygen levels and temperature in wide range, aquarium, school teaching experiment, lab sterile environment, aquaculture, scientific research etc.
- Automatic Temperature Compensation, Manual Salinity (MSC) and Altitude (MAC) Compensation, and degree ℃/℉ switchable. Icon DO O2 and unit mg/L, ppm, %, ℃, ℉ for recognition easy during select function mode. Easy to replace DO probe module by user.
- Waterproof IP-57 standard and rugged design for field use conveniently. It can float on water.
- Low battery and consumption indicator (Batteries NOT Included). Auto shut off after 10 minutes of non use. Note: The display could not auto shut off under MAX/MIN mode.
The Video Review of Best dissolved oxygen meter
Conclusion
When you’re looking for dissolved oxygen meter, you’ll want to keep a few things in mind. First, decide what you want to use the dissolved oxygen meter for. Next, check the product reviews with comparision which we have listed as well. Once you’ve decided on dissolved oxygen meter you want to buy dissolved oxygen meter, look at the reputation of the manufacturer as well. You can compare prices and quality together before you make your purchase.