What is a Refractometer?

A Refractometer is a precision optical instrument designed to measure the concentration or mixture ratio of water soluble fluids. It measures refractive index, the speed at which light passes through a liquid. The denser the liquid the slower the light will travel through it, and the higher its reading will be on the refractometer. There are four main refractometer types: Traditional Analog Refractometers, Digital Handheld Refractometers, Inline Process Control Refractometers and Refractive Index Sensors, and Desktop, Benchtop or Laboratory Refractometers.

About MISCO Refractometer

MISCO Refractometer, in business for more than 60 years, is a respected industry leader in the field of refractometry. We maintain this leadership position because refractometers are all we do - just refractometers. Refractometers are not just a catalog item or sideline business for us, they ARE our only business. That's what makes us unique.

Our strategy is simple - we are dedicated to making refractometers useful instruments that are easy for people, not just scientists, to understand and use. We do this by demystifying arcane scientific methods and offering real-world solutions for fluid measurement applications. We pride ourselves on being the information warehouse for the refractometer community.

  • Triethylene Glycol Refractometer for Water Content in Gas Dehydration.

    I am interested in the refractometer. We use triethylene glycol for gas dehydration and I would like to know if this meter will tell us the % water in the glycol. We also use amine Ucarsol 302. The amine mix is 50% Ucarsol and 50% deionized water, will the refractometer check this mix? Thank you,

  • Refractometer to Measure AFFF and FFFP Fire-Fighting Foam.

    Please kindly furnish me with information and price on a refractometer for testing airport foam solutions for dealing with aircraft fires. The test we do presently is visual. We would like to upgrade, especially now that we have new Rescue and Fire Fighting Trucks that produce AFFF and FFFP foam solutions. We would like our inspectors to be using it to assess the foam solution concentration, quality and performance.

  • How to Measure Calcium Chloride with a Refractometer.

    I'm interested in testing calcium chloride (CaCl2) at a 30% concentration. This would be to verify identity of totes. Is this possible with a refractometer?

  • How to Test the Concentration of Fire Fighting Foam with a Refractometer.

    I was searching for a high quality digital refractometer when came across your company website. Basically the refractometer will be used to check the water to foam ratio of a fire fighters water tank (fire engine). I would appreciate if you suggest a suitable model with high precision and I would like to obtain the price and delivery time.

Build Your Own Refractometer

While we pride ourselves in having one of the largest selections of refractometers available, we recognize that every user is different and that there may not be a one-size-fits-all solution to your measurement needs. Build-Your-Own Refractometer allows you to design a custom refractometer to your exact specifications. Just select the desired number of scales, choose protection options, and then add accessories to your design - truly making it your own. When you're done you can choose to print a custom quote or place the order immediately! Give it a try! Of course, call us anytime for personalized service. 866-831-1999


New Beer Refractometer Measures with Unprecedented Precision

ANCIENT TRADITION MEETS CUTTING-EDGE TECH (CLEVELAND, OH – April 7, 2014) An enduring tradition, man’s relationship with beer dates back nearly 7,000 years. And while few human traditions can rival… [Read More]

New Instrument for High-Precision Measurements of Soy Milk Solids and Protein Concentration

(CLEVELAND, OH – April 22, 2013) MISCO introduces their new digital handheld Soy Milk refractometer, engineered specifically for measuring the solids and protein content of Soy Milk. The MISCO Soy… [Read More]

New Modular Smart-Sensors Make Concentration Measurement Simple & Inexpensive

(CLEVELAND, OH – April 15, 2013) Conceptually different than any other inline refractometer available, the patented IRIS™ (Intelligent Refractive Index Sensor) line introduced today by MISCO,… [Read More]

Inline Process Refractometer, Based on New Smart-Sensor, Achieves Five-Fold Increase in Performance

(CLEVELAND, OH – April 8, 2013) The VIP2 inline process refractometer represents one of the latest advancements in smart-sensor technology. Inline refractometers have long been used to measure the… [Read More]

New Digital-Dairy Instrument Measures Waste Milk Solids, Colostrum Quality, Dehydration, and IgG Blood Levels

(CLEVELAND, OH – April 3, 2013) MISCO introduces their new Digital-Dairy™ line of refractometers specifically designed to help dairy farmers and calf ranchers to rear healthy calves. Among the many… [Read More]
MISCO Maple Syrup Refractometer eMaple

From Sap to Syrup; New Digital Refractometer Keeps Maple Measurements from Getting Sticky

MISCO Puts Laboratory Bench-Top Precision in the Palm of Your Hand MISCO introduces the new eMaple line of handheld digital refractometers engineered specifically for maple syrup production. The… [Read More]

Build Your Own Refractometer

Our Build-Your-Own Refractometer section allows you to design a custom refractometer to your exact specifications. First, select the measurement scales. Next, add options and then accessories to your design. Finally, you can print a custom quote or order immediately. TRY IT NOW!


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Contact MISCO

3401 Virginia Road
Cleveland, OH 44122

Toll Free 866-831-1999
Phone 216-831-1000
Fax 216-831-1195