What does a refractometer?

The refractometer is a well-established instrument used for measuring the water content of liquids. It measures the refractive index of the liquid, which changes according to the moisture content.

What are the most common uses for the refractometer?

In laboratory medicine, a refractometer is used to measure the total plasma protein in a blood sample and urine specific gravity in a urine sample. In drug diagnostics, a refractometer is used to measure the specific gravity of human urine.

What fluids can be checked with a refractometer?

Refractometers can measure both Ethylene and Propylene glycol based coolant/antifreeze very accurately.

What is a refractometer used for in automotive?

A refractometer is used to measure the freezing point of vehicle coolant, washer fluid, and potentially also testing battery electrolyte.

Why is refractometer used?

A refractometer is most often used to determine the characteristics of a liquid sample. By calculating the refractive index, a researcher may be able to identify a liquid sample, assess the sample’s purity, and determine the concentration of solute (that is, dissolved materials) in a liquid solution.

What should my refractometer read?

When using a normal brine refractometer the user should therefore look for a reading of 36.5pptwhen trying to achieve a reading of 35ppt for natural sea water.

How do you use a refractometer for antifreeze?


Solution you place a drop on the sample. Area and the brick should be set on zero. If it's not turn the adjustment screw until the bricks is zero to test place a small sample of your coolant.

How do I check coolant concentration?

The application is very easy: It involves simply adding a few drops of the coolant emulsion to the refractometer. The fluid’s index of refraction can then be read off. The coolant concentration in vol. % can be obtained by multiplying the result with the specific factor of the product.

Can a refractometer measure pH?

From time to time Refractometer Shop adds products that go hand in hand with our high quality handheld refractometers for measuring Refractive Index and Brix. This collection of instrumentation and electrodes for measuring pH values and conductivity from are manufactured by Xylem brands from around the world.

Can a refractometer measure alcohol?

A refractometer can not be used as an alcohol tester for wine. It will not test the alcohol level. A refractometer will only test the sugar level of a wine must or finished wine. This is no different than what a wine hydrometer can actually do.

Where is refractometer used?

A refractometer is a simple instrument used for measuring concentrations of aqueous solutions. It requires only a few drops of liquid, and is used throughout the food, agricultural, chemical, and manufacturing industries.

What does a refractometer measure in milk?

NUTRITION—A Brix refractometer can be used to evaluate the percent solids of liquid nutrition. The natural percent solids of normal whole milk is generally 12-13%. The Brix reading of the milk plus two is a close approximation of the percent total solids.

How does a refractometer work salinity?

Salinity can be conveniently measured in a ballast water tank using a refractometer. The instrument works on the critical angle principle, utilizing lenses and prisms to project a shadow line onto a small glass reticle inside the refractometer, which is then viewed by the inspector through a magnifying eyepiece.

How do you use a refractometer on a reef tank?

The latest generation of aquarium hydrometers use a pivoting pointer inside a water collection chamber to indicate specific gravity and salinity levels.



How to Use a Refractometer

  1. Open the prism cover.
  2. Place a few drops of water on the prism.
  3. Close the cover.
  4. Look through the eyepiece.
  5. Adjust focus.


What does a refractometer measure Reef?

The refractometer measures the amount of light shift, called the angle of refraction. This refraction is converted to a useful unit of measure. With saltwater refractometer, the units are specific gravity and salinity.

How do you use a refractometer for hydration?

Quote from video:
So all you're going to do is look at the lower left scale where the specific gravity is and look for where the black line goes across the scale. And read off the scale.

What is normal USG for dog?

Average USG throughout the day should be >1.020 in dogs. In dogs, often USG is >1.030 to 1.040 in samples of the first urine of the morning before consumption of food or water. The USG of some dogs may vary widely throughout the day presumably as a result of eating, drinking, and activity.

Which is better hydrometer or refractometer?

If you want to brew beer at home or even go pro, you’ll need a hydrometer; there’s no doubt about that. Think of it as a basic necessity. If you want to be more precise with your measurements, therefore achieving better brews, then you might want to invest in a refractometer. It will be a lifesaver.

How much urine is needed for refractometer?

The second digital refractometer technique requires a urine sample ≥0.3 mL to be pipetted (PIP; model PAL-10S; Atago Co, Ltd) on the prism.

Why my pee is brown red?

Blood. Factors that can cause urinary blood (hematuria) include urinary tract infections, an enlarged prostate, cancerous and noncancerous tumors, kidney cysts, long-distance running, and kidney or bladder stones. Foods. Beets, blackberries and rhubarb can turn urine red or pink.

Why might a doctor order the chemical testing of urine?

If you’ve been diagnosed with a medical condition, such as kidney disease or a urinary tract infection, your doctor might recommend testing your urine regularly to monitor your condition and treatment.