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The Best Salinity Tester of 2021

  Updated on 19 October, 2021

Generated From 25K+ Reviews!
SaleBestseller No. 1
Hanna Salinity Tester HI98319
  • Waterproof and floats!
  • Includes 4x of the Salinity Calibration Fluid Packets.
  • Automatic Calibration – A 35.00 ppt solution is used for calibration and automatically...
  • Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific...
Bestseller No. 2
eSeasonGear SALT-3050 Waterproof IP65 Meter, Digital...
  • Precalibrated at 3000 ppm salt (NaCl) at 25°C / 77°F
  • Built-in ATC sensor for automatic temperature compensation; Built-in salt (NaCl)...
  • Salt Range: 0-5000 ppm or 0.0-0.5 %; Temperature Range: 0-55 °C or 32-130 °F; Waterproof...
  • Works ONLY for Salt Water Pool and Koi Fish Pond Salt level testing.
SaleBestseller No. 3
Digital Salinity Tester for Salt Water - Waterproof IP67...
  • Salinity Range: 0~9999ppm/10~200ppt or 0.0-25%, ORAPXI salinity tester has an automatic...
  • Wide applications: There are various purposes for the salinity tester. This instrument can...
  • Backlit design: There is no need to worry about seeing the displayed value if the light is...
  • 4-in-1 salinity tester: The multi-parameter Tester can test Salinity, TDS, EC and...
SaleBestseller No. 4
Bestseller No. 5
Salinity Refractometer for Seawater and Marine Fishkeeping...
  • Measure salt water or salinity of water, ideal for aquariums and marine monitoring.
  • Measures on 2 scales, Specific Gravity (D 20/20) and parts per thousand.
  • Features automatic temperature compensation.
  • Comes with hard case, dropper, screwdriver, user manual and cleaning cloth.

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Buyer's Guide: Salinity Tester

Salinty Tester

Get Hanna and let your testing get better! The specially designed, compact handheld Salinity Tester helps you test for saltwater clarity and accuracy. Designed to bring uniformity to salinity testing throughout the entire any-step process, the Hi 98 319 marine salinity tester automatically measures conductivity ( EC ) to determine the salinity level of artificial and natural seawater. Within minutes, the salinity and water temperature are digitalized on the LCD. Scaled by sample volume, results in parts per million (ppm), standard temperature (Tg), or specific gravity (SI).

The Salinity Tester's small body is easily portable and extremely reliable. It includes a stainless steel case, a user programmable dial, and a stainless steel calibration cap. The tester easily adjusts from five to seven parts per million (ppm), ten parts per hundred (ppc), or one part per thousand (SPF). The calibration cap conveniently houses the tester and keeps it from bumping into the sides of the tester or the table.

Many hobbyists use the Salinity Tester to test their aquariums. In fact, many saltwater aquarium forums and magazines contain threads about how to use the Salinity Tester. Using the Salinity Tester in your home aquarium will allow you to determine both the hardness and acidity of your water, which is important when setting up feeding systems for reef aquariums. The Salinity Tester can also be used to monitor salt levels in fresh water aquariums.

How does the Salinity Tester work? Salts are suspended in water. As water passes over them, they become saturated with water and begin to float on top of the water surface. Over time, they harden. If they harden too much, they will become cloudy and reduce the permeability of water. But if they are properly dissolved in the tank, their conductivity and density will change, and they will begin to refract and reflect light.

The Testers themselves are a set of electronic measurement devices. They consist of a conductivity tank, a surface area, a bium solution used as a reference, and a precision quartz crystal sensor. The conductivity tank contains water and is electrically charged. This creates a current which flows through the bium solution, and through the sensor. As the sample passes through the Tester, it will display results indicating the salinity, pH, and various other aspects of conductivity.

To test conductivity, you need a Salinity Tester. There are two types of pocket sized testers available. The first one is a multi meter. This works by using a probe that is inserted into the water column. By varying the pressure and water flow through the probe, you can determine how much of each component is separated. The second type is a single meter that works by detecting changes in an alkalinity/potassium or salt concentration in the water column.

With either type of tester, results can be seen in less than ten seconds. This makes them ideal for quick analysis. Most instruments that perform these types of tests include a calibration kit, conductivity meter, and graphite sensors. Most pocket marine aquarium salinity testers include a detailed calibration procedure which includes precise measurements of dissolved oxygen, total alkalinity, total calcium, and total magnesium.

Graphite sensors are especially useful for checking pH levels in the water. While most other testers will use standard conductivity and pH meters, graphite sensors give an accurate reading simply because they utilize the natural resistance of graphite to change shape. In other words, graphite is harder to resist crushing, so it becomes softer as it changes shape when pressure is applied. This means that a pressure change in the tank will have a greater effect on a graphite sensor than on a standard conductivity tester. Salinity Testers are made specifically for graphite sensors so you can easily get the best performance from your Salinity Tester.