Magnum Media Salinity Specific Gravity & PPT Refractometer

Last updated date: July 8, 2021

DWYM Score

9.6

Magnum Media Salinity Specific Gravity & PPT Refractometer

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We looked at the top Refractometers and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Refractometer you should buy.

Update as July 8, 2021:
Checkout The Best Refractometer for a detailed review of all the top refractometers.

Overall Take

This salinity measurement instrument is portable and easy to use. In fact, the refractometer comes in a hard storage case, along with a cleaning cloth and set of instructions. With the instrument, you'll be able to measure on two scales instead of one. Results will be in both specific gravity and parts per thousand.


In our analysis, the Magnum Media Salinity Magnum Media Salinity Specific Gravity & PPT Refractometer placed 1st when we looked at the top 12 products in the category. For the full ranking, see below.

From The Manufacturer

​Magnum Media Salinity 10ATC is a professional brand of salinity measurement instrument. This refractometer is a portable, precision optical instrument. It is designed for the measurement of seawater or very low concentrated salt solutions. It measures on two scales - specific gravity and parts per thousand, making you get two readings at the same time in just one test. It is portable and needs no battery, it is easy to learn and use, easier and more accurate than a traditional hydrymeters, it is convenient for all people-children and adults, old and young, ideal for aquariums, marine monitoring, agricultural, gardening & educational purposes. It features high-quality optics with smooth focusing. Its main body is made of aluminum alloy. The internal optical lens with high refractive index make up the precision optical system.The instrument is resistant to abrasion and corrosion, can be used to measure the salinity of general corrosive liquid. (But we do not recommend measuring these liquids for a long time. The residue should be cleaned immediately after measurement.)

Expert Reviews

User Summarized Score

9.2
589 user reviews

What experts liked

What experts didn't like

An Overview On Refractometers

Required by people with a few select, niche hobbies or occupations, a refractometer is a unique tool with particular properties. Because of this, making the best choice can be challenging. Before shopping for a refractometer, considering several factors can help you determine what to look for to select the right tool for your needs.

Industry and application are the first considerations to bear in mind. If you are a professional beekeeper who wants to ascertain the best time to harvest honey, a refractometer designed to measure moisture, Brix (the sugar content of the liquid), and Baume (the density of the honey). Alternatively, if you have a saltwater pool, you will need a refractometer that tests the salinity of the water.

Ease of use is another factor to consider. You will appreciate a lightweight, portable device that you can pick up and carry as needed. And a prism that is easy to clean will provide more accurate results.

Prism material can be important, as well. While glass prisms are the most economical, they are not as durable as sapphire prisms, which are four times harder than glass.

The Refractometer Buying Guide

  • If you prefer a manual instrument, shop for a transmission-style refractometer. With this device, you place a sample on the prism and align it by turning a control knob.
  • If you prefer an automatic instrument, shop for a reflection-style refractometer. With this device, you place a sample on the prism and press a button to read the measurements.
  • Density is not the only thing that can change the refractive index of a liquid. Temperature can affect it, as well. A high-quality refractometer will feature automatic temperature compensation, sometimes labeled ATC. This feature will provide consistent reports over a range of practical temperatures.
  • Look for a dual-scale refractometer. These instruments report results in both Brix and specific gravity units.