10 bestOptical Refractometersof November 2025

Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution

$Vee Gee Scientific STX-3 Handheld Refractometer, with Salinity Scale, 0-100, -1.0 Accuracy, 1.0 Resolution$

VeeGee

9.4

SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading

$SunGrow Aquarium Refractometer, 7.6 Inches, Measure Salinity of Water, Remarkable Accuracy, Includes Calibration Tool, Ensures Overall Health of Plant and Marine Life, Easy and Clear Reading$

SunGrow

9.1

3 in 1 Scale Clinical Refractometer with 10~30°C ATC, Serum Protein 0~12g/dl, Urine Specific Gravity 1.000~1.050, Refractive Index 1.333~1.360 RI for Human Use.

$3 in 1 Scale Clinical Refractometer with 10~30°C ATC, Serum Protein 0~12g/dl, Urine Specific Gravity 1.000~1.050, Refractive Index 1.333~1.360 RI for Human Use.$

DANOPLUS

8.9

Antifreeze Refractometer for Glycol, Antifreeze, Coolant and Battery Acid. Antifreeze Tester for Measuring Freezing Point of Automobile Antifreeze and Battery Fluid Condition

$Antifreeze Refractometer for Glycol, Antifreeze, Coolant and Battery Acid. Antifreeze Tester for Measuring Freezing Point of Automobile Antifreeze and Battery Fluid Condition$

RGBS

8.6

OtherRelated products

$Brix Refractometer for Homebrew Beer Wort, RGBS Dual Scale Automatic Temperature Compensation 0-32% Specific Gravity Hydrometer with ATC$

Brix Refractometer for Homebrew Beer Wort, RGBS Dual Scale Automatic Temperature Compensation 0-32% Specific Gravity Hydrometer with ATC

$AUTOUTLET Brix Refractometer Aluminum 0~32% Digital LCD Display Beer Wine Sugar Test Tool Kit Dual Scale, Brix Scale and Specific Gravity Scale ATC 10°C~30°C$

AUTOUTLET Brix Refractometer Aluminum 0~32% Digital LCD Display Beer Wine Sugar Test Tool Kit Dual Scale, Brix Scale and Specific Gravity Scale ATC 10°C~30°C

Laser 7240 Mixture Strength Tester - for Urea (AdBlue®)

$Abuycs High Proof Alcohol Refractometer, ATC Alcohol Refractometer with 0-80% Alcohol Measurement Range for Liquor and Spirits. High Accuracy ±1% Alcohol Refractometer for Whiskey, Brandy, Vodka, etc.$

Abuycs High Proof Alcohol Refractometer, ATC Alcohol Refractometer with 0-80% Alcohol Measurement Range for Liquor and Spirits. High Accuracy ±1% Alcohol Refractometer for Whiskey, Brandy, Vodka, etc.

High Precision Alcohol Refractometer 0-80% v/v, XRCLIF Hand-held Alcohol Content Measurement Tool, Portable Refractometer Alcohol Meter for Bourbon Vodka Gin Tequila Mezcal Whisky Scotch etc

$High Precision Alcohol Refractometer 0-80% v/v, XRCLIF Hand-held Alcohol Content Measurement Tool, Portable Refractometer Alcohol Meter for Bourbon Vodka Gin Tequila Mezcal Whisky Scotch etc$

XRCLIF

8.3

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

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

RGBS

8.0

Proster Brix Refractometer with ATC Brix 0-80% Hand Held Refractometer with 3 PCS Pipette for Sugar Content Measurement of Sugar Fruit Food Honey etc

$Proster Brix Refractometer with ATC Brix 0-80% Hand Held Refractometer with 3 PCS Pipette for Sugar Content Measurement of Sugar Fruit Food Honey etc$

Proster

7.7