1
Digital DO meter with mg/L and % modes.
3m probe cable for deeper water testing.
Automatic temperature compensation for stable readings.
Bluetooth connectivity for data management via APP.
Easy calibration with included accessories.
Backlight LCD for easy reading in low light.
365-day warranty and responsive customer support.
Average Rating out of 5:
Price Range: $68.99
2
Easy calibration for user-friendly operation.
Fast response time for accurate readings.
Replaceable battery for extended usage life.
Durable, water-resistant housing for reliability.
Anodized marine-grade aluminum construction for strength.
Compact design for convenient portability.
Ideal for diving and industrial applications.
Average Rating out of 5:
Price Range: $320.00
Size: 9.4 Inches
Material: Aluminum
3
Tests freshwater, saltwater, and various water types.
Quick results in just 3-5 minutes.
Includes everything for convenient testing.
Lightweight and portable for easy use anywhere.
Accurate results with cost-effective testing options.
Tests up to 120 times per kit.
Comes with detailed instructions and comparison card.
Average Rating out of 5:
Price Range: $24.99
Color: Yellow
4
Portable design for home and outdoor testing
Accurate readings with 0.1mg/L resolution
Extended 9.84ft probe cable for convenience
Compatible with YINMIK APP for enhanced features
Supports hydroponics, brewing, and aquaculture applications
Includes complete test kit for all experience levels
365-day warranty and 24/7 customer support
Price Range: $72.99
5
Accurate readings with reinforced polarographic probe.
Connects to mobile app for convenient use.
Automatic temperature and manual compensation features.
Easy calibration for amateurs and professionals.
Includes spare membrane caps and electrolytes.
Widely used in various aquatic applications.
Economical, reliable, and user-friendly tester.
Average Rating out of 5:
Price Range: $72.95
6
Accurate chlorine measurement from 0.01 to 10 ppm.
Waterproof design for reliable outdoor use.
Temperature range: -5 to 90°C for versatility.
Automatic self-calibration for consistent readings.
Compact size: 1.4" D x 6.8" H x 1.6" W.
Easy-to-read display for quick data interpretation.
Ideal for pool, spa, and water testing applications.
Average Rating out of 5:
Price Range: $251.15
7
Precise readings for optimal aquatic oxygen levels.
Suitable for aquariums, ponds, and aquaculture.
Portable design with clear digital LCD display.
Includes essential maintenance accessories for convenience.
Wide measuring range for diverse water conditions.
Built-in temperature sensor for accurate measurements.
Fast and consistent readings for effective monitoring.
Average Rating out of 5:
Price Range: $69.95
8
Accurate dissolved oxygen measurements up to 40 mg/L.
Built-in temperature sensor for precise readings.
Backlit digital display for easy data reading.
Auto power-off feature saves battery life.
Versatile for aquariums, ponds, and aquaculture.
Quick and easy electrode measurement without cover removal.
Includes high-precision gold and silver electrodes.
Average Rating out of 5:
Price Range: $88.99
9
Portable design for easy field use.
Accurate dissolved oxygen measurement for various applications.
Ideal for education, labs, and aquaculture settings.
Robust construction for durability in tough environments.
Easy-to-read display for quick data interpretation.
Versatile use in environmental and wastewater treatment.
Supports pond and stream management activities.
Average Rating out of 5:
Price Range: $277.99
10
Measures dissolved oxygen from 0 to 700% saturation.
Continuous analog output for real-time monitoring.
Calibration options available for increased accuracy.
Data protocol: Analog ~0 to ~3,000mV output.
Durable design suitable for various environments.
Easy-to-read analog display for immediate feedback.
Ideal for aquaculture, laboratories, and field studies.
Price Range: $23.99
Color: Yellow
11
Affordable high-quality oxygen headspace analysis.
USA NIST traceable calibration for accuracy.
Color display with graph functions for easy reading.
Computer data logging for detailed analysis records.
USB rechargeable battery for convenience and portability.
Robust, waterproof, and dust-proof design for durability.
1 year limited warranty ensures customer trust.
Average Rating out of 5:
Price Range: $855.45
12
High precision dissolved oxygen readings.
Measuring range: 0.0-40mg/L dissolved oxygen.
Automatic temperature compensation for stability.
Digital display with backlight for easy reading.
Customizable parameters for personalized testing.
Ideal for aquaculture, pools, and scientific research.
Low battery alarm and auto shut-off feature.
Average Rating out of 5:
Price Range: $88.99
13
Waterproof design for outdoor usage.
Measures dissolved oxygen in mg/L or percent.
Temperature range from 0 to 50°C.
Compact size: 1.4" D x 6.9" H.
Lightweight: only 3.8 oz for easy handling.
Replaceable screw-on membrane cap for convenience.
Optional extension cables for flexible use.
Average Rating out of 5:
Price Range: $319.88
Color: White
14
Replacement sensor cap for ProOBOD probe.
Screw-on design for easy installation.
Calibration code sequence included for accuracy.
Average lifespan of one year or more.
Fast response time, 22 seconds with stirring.
Non-consumptive optical method ensures reliability.
Requires zero flow rate for operation.
Price Range: $147.58
15
Pro Series design for accurate measurements.
Polarographic technology for reliable oxygen readings.
Compact dimensions for easy handling and storage.
Weighs only 0.35 lbs for portability.
Ideal for laboratory and field applications.
Single package quantity for convenience.
Durable construction for long-lasting use.
Average Rating out of 5:
Price Range: $271.58
Material: Plastic
16
Wide measurement range: 0.0-40.0 mg/L.
Automatic Temperature Compensation for accurate readings.
Easy calibration without removing electrode cover.
Clear LCD backlight for easy reading.
Includes protective covers and calibration powder.
Ideal for aquariums, pools, and research.
Auto power-off and low battery indicator features.
Average Rating out of 5:
Price Range: $69.79
17
Accurate measurement of dissolved oxygen levels.
Includes a mini lab-grade oxygen probe.
Easy-to-read analog meter display.
Comes with essential electrolyte solution.
Replacement membrane cap ensures longevity.
Includes a syringe for easy solution handling.
Perfect for environmental and aquatic studies.
Average Rating out of 5:
Price Range: $154.99
18
Portable design for easy transportation and use.
Ideal for educational and environmental analysis applications.
Two-point manual calibration for accurate measurements.
Automatic temperature compensation for reliable results.
LCD screen displays clear and readable data.
Includes polarographic probe with 3m cable.
Screw-on cap membrane for easy maintenance.
Average Rating out of 5:
Price Range: $199.99
19
Compatible with Hach LDO101 oxygen probes.
Easy to install and replace.
Ensures accurate dissolved oxygen measurements.
Reduces maintenance compared to older technologies.
Durable design for long-lasting performance.
Enhances reliability in various applications.
Ideal for aquatic and environmental monitoring.
Average Rating out of 5:
Price Range: $217.00
20
Replacement moisture pins for Delmhorst devices.
24-pack ensures you have ample supply.
2-inch long insulated pins for accurate readings.
Compatible with model 496/24 for seamless use.
High-quality materials for durability and reliability.
Easy installation and replacement process.
Essential for maintaining moisture measurement accuracy.
Average Rating out of 5:
Price Range: $99.33
21
Quick and easy membrane changes.
Includes 6 durable black screw-on caps.
1 mil PTFE for reliable performance.
Perfect for dissolved oxygen applications.
Superb fouling resistance for longevity.
Includes a bottle of electrolyte solution.
Comes with a sanding disc for preparation.
Price Range: $82.00
22
Quick analysis time: just 2 minutes. Cost-effective: only $0.84 per test. Measures dissolved oxygen from 1-12 ppm. Minimum Detection Limit: 1 ppm. Utilizes Indigo Carmine testing method. Reliable results for aquatic health monitoring. Made in China for quality assurance.
Average Rating out of 5:
Price Range: $75.20
23
Measures oxygen purity in various industrial environments.
Prevents explosions and accidents in low-oxygen areas.
Enhances combustion control in internal combustion engines.
Monitors oxygen levels in storage for perishable goods.
Essential for medical equipment like ventilators and incubators.
Supports research in schools and universities effectively.
Useful in manufacturing and quality inspection processes.
Price Range: $120.00
Material: Polyperfluoroethylene Propylene
24
Measures dissolved oxygen and temperature accurately.
Polarographic sensor with thermistor for temperature compensation.
Wide measurement range: 0.0-40.0 mg/L.
Easy calibration without opening electrode protective cover.
Detachable probe with six protective covers included.
Digital display with backlight for easy reading.
Auto power-off feature after 8 minutes of inactivity.
Average Rating out of 5:
Price Range: 0
Color: Black
Material: Plastic
25
Measures ORP/Redox from -999 to 999mV.
Automatic electronic self-calibration for accuracy.
Simulated analog bargraph visualizes ORP changes.
Waterproof to IP57 for wet environments.
Features data hold for convenient readings.
Auto power off saves battery life.
Low battery indication alerts for timely replacement.
Average Rating out of 5:
Price Range: $154.53
26
Complete kit for accurate dissolved oxygen measurement.
Includes 50ml zero-oxygen and 30ml electrolyte solutions.
Six replacement membrane caps for extended use.
Easy calibration with zero-oxygen solution.
High-quality PTFE membrane caps for durability.
Clear instructions for beginners on replacements.
Considerate customer service for any inquiries.
Price Range: $12.99
27
Measures dissolved oxygen in water accurately.
Compatible with Arduino microcontrollers for easy integration.
Galvanic probe requires no polarization time.
Low maintenance with replaceable filling solution and membrane cap.
Plug and play signal converter board included.
Open-source code and tutorials available for users.
Ideal for aquaculture and environmental monitoring applications.
Average Rating out of 5:
Price Range: $180.00
28
Measures dissolved oxygen and air oxygen percentage.
IP65 waterproof rating for reliable field use.
Polarographic probe ensures high precision readings.
Automatic temperature compensation for accurate results.
Compact design for easy one-handed operation.
Includes spare probe heads and electrolyte solution.
Soft carrying case for portability and protection.
Average Rating out of 5:
Price Range: $288.51
29
High accuracy for dissolved oxygen measurements.
Large LCD displays DO and temperature values.
Measures DO in % or ppm/mg/l.
Temperature range: 0-50°C with ±0.3°C accuracy.
Auto temperature compensation for precise readings.
Memory storage for up to 99 measurements.
Ideal for aquaculture and water quality testing.
Average Rating out of 5:
Price Range: $182.90
