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Portable Refractometer


Easy & very convenient to use
High Quality, Accurate testing
Range 0-10% Salinity

Portable Refractometer

Portable Refractometer – Why pay up to $130.00 elsewhere? Our Price $69.90


Model:RHS-10 ATC

Range:0-100 PPG 1.000-1.070 SG  1.0 PPT

Min. Div:0.001 SG

Accuracy: ±1.0 PPT ±0.001 SG

Adjustable manual focusing

Rubberized grip handle

Soft rubber eye piece for comfortable viewing

Calibration screw

Designed for testing the concentration of salt water & brine. Its triple scale provides a direct reading of the specific gravity & concentration (parts per thousand) of salt in water

Easy to use and accurate to keep your fish and invertebrates happy, just add a couple of drops of aquarium water to the screen and look through the device to get an accurate reading.

For more testing products click HERE

Specific gravity measures the relative salinity (amount of dissolved salts) in your aquarium water in comparison to pure water. Measuring specific gravity on a regular basis is crucial to maintain the ideal environment for your marine inhabitants


What does a refractometer do?

Serious hobbyists know that the best way to measure the salinity and specific gravity of aquarium water is to use a refractometer. These precision optical instruments are incredibly accurate even at very low salt levels, and are equally easy to use. Recently, these instruments have become more affordable, so now every aquarium owner can have one to help monitor water conditions.

How do I use it?

Place 1 to 2 drops of aquarium water onto the prism glass and close the plate cover. Once a fluid sample is placed on the measuring surface, the light passing through it slows and bends. The refractometer focuses this bent light on a tiny internal scale. The scale is magnified by the eyepiece lenses so it is easily visible.

Look through the eyepiece and view the scale. The top portion of the scale appears blue and the bottom part appears white. Take your reading at the intersection of these two colors. One side of the scale measures salinity and the other side measures specific gravity.

To effectively monitor your marine aquarium water conditions, consider investing in a refractometer. The accuracy and affordability make it worthwhile.


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