10 Best Lab Refractometers

$OriGlam 4-in-1 Car Adblue Urea Refractometer Battery Fluid Ethylene Propylene Glycol ATC$

OriGlam 4-in-1 Car Adblue Urea Refractometer Battery Fluid Ethylene Propylene Glycol ATC

Test 4 concentration: Ethylene Glycol, Propylene Glycol, Battery Fluids, and Cleaning Fluids.
With ATC system that automatically adjusts to the proper temperature during operation.
Test the urea concentration additive AdBlue. Quickly and accurately check the Urea content in Adblue.
Accurately measures the density of battery fluids (1.100 ~ 1.400sg)
Measures the degree of frost resistance of the coolant (-50 ~ 0C), Measures the degree of frost resistance cleaning fluid (-40 ~-10C)

$QUMOX Refractometer for Brix Testing, 0-32% Scale with ATC, Ideal for Early-Stage sap Monitoring, Fruit Juice, Wine, and Brewing.$

QUMOX Refractometer for Brix Testing, 0-32% Scale with ATC, Ideal for Early-Stage sap Monitoring, Fruit Juice, Wine, and Brewing.

Brand: QUMOX

Single Scale Design: Measures Brix from 0–32%, ideal for low-sugar liquids such as fruit juice, wine, and sap.
Accurate Readings: Suitable for food and beverage industries, home brewing, and early-stage beekeeping sap analysis.
Automatic Temperature Compensation: Delivers quick and reliable results regardless of temperature changes.
Durable and Portable: Constructed from high-quality materials, easy to use and carry—perfect for various applications.
Complete Kit: Includes cleaning cloth, suction tube, screwdriver, and user manual for convenience and ease of use.

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#3 Budget Pick

$QUMOX 0–28% Salinity Refractometer with ATC, Optical Salt Meter for Sodium Chloride (NaCl) – Sea Water, Brine, Pickle, Food Processing – No Battery Needed, ±0.2% Accuracy$

QUMOX 0–28% Salinity Refractometer with ATC, Optical Salt Meter for Sodium Chloride (NaCl) – Sea Water, Brine, Pickle, Food Processing – No Battery Needed, ±0.2% Accuracy

Brand: QUMOX

Accurate Salt Measurement – Measures salinity from 0% to 28% with ±0.2% precision, ideal for testing salt levels in seawater, brine, and food processing solutions.
No Battery Required – Optical design powered by light, not batteries. Easy and reliable operation anywhere – lab, kitchen, or outdoors.
Built-in ATC – Automatic Temperature Compensation (ATC) ensures accurate readings even with temperature fluctuations (reference 20°C).
User-Friendly Design – Clear scale, adjustable focus, and easy-to-read results. Simple to calibrate and perfect for both professionals and beginners.
Complete Testing Kit – Includes refractometer, pipettes, calibration screwdriver, cleaning cloth, user manual, and a protective storage case.

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#4 Top Choice

$Digital Brix Refractometer, 0‑55% Range High Accuracy Brix Tester Meter for Fruit Juice and Coffee Beverage Drinks Sugar Content Measuring, ±0.2% Accuracy$

Digital Brix Refractometer, 0‑55% Range High Accuracy Brix Tester Meter for Fruit Juice and Coffee Beverage Drinks Sugar Content Measuring, ±0.2% Accuracy

Brand: LICAEVEY

HIGH ACCURACY: Brix meter has built in excellent chip, high measurement accuracy, sensitive response, fast measurement speed and long term use.
AUTOMATIC CALIBRATION: Brix tester supports temperature compensation function, automatic calibration, not affected by the environment, automatically eliminate the measurement error.
WIDE APPLICATION: Digital brix refractometer is widely used in food, beverage, fruit sugar content determination, crop sugar content determination and other fields.
BACKLIGHT DISPLAY: Brix refractometer is equipped with HD backlight display, supporting three kinds of data display, clear and intuitive, more convenient to use.
EASY TO USE: Brix meter refractometer is equipped with a high transmittance refractive prism, and the liquid can be measured after mixing well.

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#5 Popular Choice

$QUMOX 3-in-1 Honey Refractometer for Moisture, Brix and Baume, 58–90% Brix Scale – No Battery Needed, ATC Optical Tester for Honey, Syrup, Molasses, Beekeeping & Food Processing$

QUMOX 3-in-1 Honey Refractometer for Moisture, Brix and Baume, 58–90% Brix Scale – No Battery Needed, ATC Optical Tester for Honey, Syrup, Molasses, Beekeeping & Food Processing

Brand: QUMOX

3-in-1 Measurement – Quickly measures honey moisture content (12–27%), sugar concentration (Brix 58–90%), and Baume (38–43°Be) in a single reading
No Battery Required – Optical design works without power. Get instant, reliable results in the field, lab, or workshop anytime.
ATC Function – Built-in Automatic Temperature Compensation (0–30°C) ensures accurate readings even when environmental temperatures vary.
Easy to Use & Calibrate – Just drop liquid on the prism and look through the eyepiece. Includes calibration screwdriver for easy setup.
Portable Full Kit – Comes with a dropper, calibration screwdriver, cleaning cloth, user manual, and protective case. Lightweight and perfect for beekeepers or food labs.

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#6 Top Pick

$QUMOX 3-in-1 Veterinary Refractometer for Urine Specific Gravity & Serum Protein – Dog, Cat, Pet Health Monitor, Optical ATC Tester for Animal Clinic, No Battery Needed$

QUMOX 3-in-1 Veterinary Refractometer for Urine Specific Gravity & Serum Protein – Dog, Cat, Pet Health Monitor, Optical ATC Tester for Animal Clinic, No Battery Needed

Brand: QUMOX

3-in-1 Veterinary Testing – Designed for animals, this refractometer tests urine specific gravity for dogs and cats, and serum or plasma protein levels from 2–14 g/dL.
Triple Scale Design – Left scale for dogs/large animals, middle for cats/small animals, right scale for total serum or plasma protein concentration.
No Battery Required – Optical design means no charging or battery changes needed. Use anywhere, anytime with quick, accurate results.
ATC for Consistency – Built-in Automatic Temperature Compensation ensures accuracy across varied environments (reference 20°C).
Complete Testing Kit – Includes refractometer, dropper, calibration screwdriver, cleaning cloth, manual, and storage case – ideal for clinics or mobile use.

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#7 Top Pick

$Gem Refractometer, 1.30 to 1.81 Quick Ldentification Tester Jewelry Refractometer, Portable Refractometer Lab Refractometers for Jade, Gold, Silver, Diamond$

Gem Refractometer, 1.30 to 1.81 Quick Ldentification Tester Jewelry Refractometer, Portable Refractometer Lab Refractometers for Jade, Gold, Silver, Diamond

Brand: FENX

High Accuracy: Professional refractometer has high accuracy, small size, easy portability and easy operation.
Quick Identification: The refractometer can quickly and accurately identify a variety of single and double , helping to identify diamonds, moissanite, etc.
Specially Designed: This refractometer is specially designed to measure the refractive index of and materials.
Strong Practicality: The primary use of the portable refractometer is to measure the angle at which light is bent or refracted through the stone.
Clear Display: The jewelry refractometer has a clearly visible display for easy reading.

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#8 Top Pick

$Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation, by Aqueous Lab$

Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation, by Aqueous Lab

Brand: Agriculture Solutions

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.
The main part is made of chromium, it's very durable.

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#9 Top Pick

$Digital BRIX Refractometer 0-55% Brix Range, Handheld Pocket High Accuracy BRIX Meter, Digital BRIX Tester Sugar Content Meter for Fruits Drinks Beer Sugar Content Test$

Digital BRIX Refractometer 0-55% Brix Range, Handheld Pocket High Accuracy BRIX Meter, Digital BRIX Tester Sugar Content Meter for Fruits Drinks Beer Sugar Content Test

Brand: Jiawu

【HIGH ACCURACY】Brix meter has built in excellent chip, high measurement accuracy, sensitive response, fast measurement speed and long term use. Brix measurement range: 0‑32%/55%. Resolution: Brix: 0.1%; Temperature: 0.01℃. Accuracy: Brix degree: ±0.2%; Temperature: ±0.15℃.
【AUTOMATIC TEMPERATURE COMPENSATION】Brix tester supports temperature compensation function, automatic calibration, not affected by the environment, automatically eliminate the measurement error.
【EASY TO USE】Brix meter refractometer is equipped with a high transmittance refractive prism, and the liquid can be measured after mixing well. The HD backlit display supports three kinds of data display, which is clear and intuitive, and more convenient to use.
【WIDE APPLICATION】Digital brix refractometer is widely used in food, beverage, fruit sugar content determination, crop sugar content determination and other fields, simple and convenient.
【QUALITY 】If you receive a defective product, please us and we will do our best within 24 hours to ensure your complete satisfaction.

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#10 Top Pick

$QUMOX 0–80% Brix Refractometer for Sugar Content in Fruit, Juice, Honey, Syrup & Drinks – Optical Tester with ATC, No Battery Needed, for Food, Farming, Lab Use$

QUMOX 0–80% Brix Refractometer for Sugar Content in Fruit, Juice, Honey, Syrup & Drinks – Optical Tester with ATC, No Battery Needed, for Food, Farming, Lab Use

Brand: QUMOX

Wide 0–80% Brix Range – Measures sugar content in fruits, fruit juice, honey, maple syrup, soft drinks, and other sugary liquids with a large readable scale.
No Battery Required – Uses optical refraction for quick and accurate readings without any power source, perfect for field or lab use anytime, anywhere.
ATC for Temperature Accuracy – Built-in Automatic Temperature Compensation (0–25°C) ensures consistent and reliable readings even when the environment changes.
Portable & Complete Kit – Includes dropper, screwdriver, user manual, cleaning cloth.
Multipurpose Use – Ideal for food & beverage production, fruit ripeness monitoring, home brewing, honey testing, and science education or research.

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