10 Best salinity testers of 2025

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Best Choice

1

$Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution (color may vary)$
Milwaukee

Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution (color may vary)
9.9

Exceptional

Our Rating
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Value for Money

2

WLR Industries

WLR Industries Hanna HI98319 Marine Salinity Tester Checker
9.7

Exceptional

Our Rating
3

$Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation$
Agriculture Solutions
Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation
Main highlights

Key Features and Benefits
Dual-scale salinity meter with automatic temperature compensation, durable chromium build. Includes case, dropper, screwdriver, manual, and cloth.

Ideal Use Cases
Perfect for aquarium enthusiasts and marine monitoring, ensuring optimal salinity levels for marine life health.

Customer Praise
Most reviews highlight its durability and accuracy, appreciating the comprehensive kit for easy use and maintenance.
9.5

Excellent

Our Rating

9.1
Simple to use

8.9
clearly written

8.7
Precision
4

Hofun
Pool Salt Tester & PH Meter, Hofun Digital Salinity Meter and PH Tester for Aquarium and Pool Saltwater Water, 5 in 1 Salinity PH Temp EC and TDS Meter, Aquarium Swimming Pool Hot Tub, High Accuracy
Main highlights

5-in-1 Functionality
Combines salinity, pH, temperature, EC, and TDS testing in one device.

Versatile Applications
Ideal for testing pools, drinking water, aquariums, and hydroponics.

Ease of Use
Praised for its easy operation and quick, accurate measurements.
Key specs
- Display Type:PPM + PPT +
- Sensor Type:Titanium alloy probe
- Automatic Features:Auto change to ppt
- Measurement Range:0-9999ppm & 0-200ppt
- Multi-Functionality:Salinity, TDS, EC, pH, Temp
9.4

Excellent

Our Rating

9.7
Simple to use

9.5
clearly written

8.9
Precision
5

Hanna Instruments

Hanna Salinity Tester HI98319
9.3

Excellent

Our Rating
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6

eSeasonGear
eSeasonGear SALT-3050 Waterproof IP65 Meter, Digital Salinity PPM Temperature Tester for Salt Water Pool and Koi Fish Pond

15% Off
Main highlights

Precalibrated and Waterproof
The 2023 SALT-3050 is preset to 0.5 salt mode, precalibrated at 3000 ppm, and has a waterproof rating of IP65.

Ideal for Pools and Ponds
Works exclusively for saltwater pool and koi fish pond salt level testing; not suitable for marine tanks, food, or other applications.

Accurate Readings
Customers appreciate the device's accuracy and reliability in providing consistent salt level readings, often outperforming other testing methods.
Key specs
- Manufacturer:eSeasongear
- Item Weight:0.01 ounces
- Battery Life:N/A
- Screen Size:N/A
- RAM Size:N/A
9.2

Excellent

Our Rating

9.3
Simple to use

9.1
clearly written

8.7
lasts a long time
7

hygger

hygger Salinity Tester, Transparent Acrylic Aquarium Hydrometer Sea Specific Gravity Test Salinity Meter for Fish Tank Pond Water Saltwater Freshwater, Accurate Automatic Hydrometer
9.1

Excellent

Our Rating
8

$Salinity Refractometer for Aquarium Seawater Marine Fishkeeping Salinity Tester 0-100PPT & 1.000-1.070 Salinity Hydrometer Slatwater Refractometer with Automatic Temperature Compensation (ATC)$
Hallocool
Salinity Refractometer for Aquarium Seawater Marine Fishkeeping Salinity Tester 0-100PPT & 1.000-1.070 Salinity Hydrometer Slatwater Refractometer with Automatic Temperature Compensation (ATC)
Main highlights

Dual Scale Measurement Accuracy
Aquarium Refractometer features specific gravity D20/20 1.000-1.070 and parts per thousand 0-100, providing accurate results in different units with one test.

Versatile Use for Aquatic Environments
Ideal for measuring saltwater, salinity of water or seawater in aquariums, marine monitoring, fish-keeping, and saltwater pools.

Ease of Use and Calibration
Customers praise its ease of use and accurate readings, highlighting the importance of proper calibration for optimal performance.
9.0

Excellent

Our Rating

9.3
Simple to use

9.1
Precision

9.1
clearly written
9

YUZIIB

YUZIIB Salt Tester for Saltwater Pool & pH Meter,5 in 1 Digital Water Tester for Salinity,Temp,EC,TDS Meter for Pool Salt Tester,Hot Tubs & Spas,Hydroponics,Aquarium,Accurate & Reliable,Green
8.9

Very Good

Our Rating
10

$AUTOUTLET Salinity Refractometer Saltwater Aquarium for Seawater, Pool, Tank, Marine, Fishkeeping, 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function Salinity Hydrometer Kit$
AUTOUTLET

AUTOUTLET Salinity Refractometer Saltwater Aquarium for Seawater, Pool, Tank, Marine, Fishkeeping, 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function Salinity Hydrometer Kit
8.7

Very Good

Our Rating

10 Best salinity testers of 2025

1

Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution (color may vary)

How do we rank?

How do we rank?

Analyzing top stores

2

WLR Industries Hanna HI98319 Marine Salinity Tester Checker

3

Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation

9.1

8.9

8.7

4

Pool Salt Tester & PH Meter, Hofun Digital Salinity Meter and PH Tester for Aquarium and Pool Saltwater Water, 5 in 1 Salinity PH Temp EC and TDS Meter, Aquarium Swimming Pool Hot Tub, High Accuracy

9.7

9.5

8.9

5

Hanna Salinity Tester HI98319

6

eSeasonGear SALT-3050 Waterproof IP65 Meter, Digital Salinity PPM Temperature Tester for Salt Water Pool and Koi Fish Pond

9.3

9.1

8.7

7

hygger Salinity Tester, Transparent Acrylic Aquarium Hydrometer Sea Specific Gravity Test Salinity Meter for Fish Tank Pond Water Saltwater Freshwater, Accurate Automatic Hydrometer

8

Salinity Refractometer for Aquarium Seawater Marine Fishkeeping Salinity Tester 0-100PPT & 1.000-1.070 Salinity Hydrometer Slatwater Refractometer with Automatic Temperature Compensation (ATC)

9.3

9.1

9.1

9

YUZIIB Salt Tester for Saltwater Pool & pH Meter,5 in 1 Digital Water Tester for Salinity,Temp,EC,TDS Meter for Pool Salt Tester,Hot Tubs & Spas,Hydroponics,Aquarium,Accurate & Reliable,Green

10

AUTOUTLET Salinity Refractometer Saltwater Aquarium for Seawater, Pool, Tank, Marine, Fishkeeping, 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function Salinity Hydrometer Kit

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