Reviews Gemological Refractometer

JOR Refractometer, Dual-Range Scale Device to Measure Salinity and Specific Gravity of Saltwater Aquarium and Reef Tank, Provides Accurate Reading, No Batteries Required, 1 Set per Piece

  • Dual-Range Scale Refractometer --- A healthy saltwater aquarium requires a salinity balance or the salt concentration in aquarium water. Refractometer by JOR helps maintain this fundamental parameter in your saltwater aquarium or reef tank, measuring both salt percentage and specific gravity. This measuring tool has a scale range of 0 to 100%, where 1% means one part per thousand (PPT) or 1000 parts per million (PPM) and with a corresponding specific gravity range of 1.000 to 1.070..
  • Provides Accurate Measurement Reading --- Forget guessing and estimating. This handy refractometer features automatic temperature compensation that gives precise, faster and easier readings..
  • Easy To Use --- Place 2 to 3 drops of aquarium water on the glass, then close the plastic cover. Look through the eyepiece as you hold it under a light source. Check the reading. The blue line indicates the exact salinity level..
  • High Quality And Economical --- This premium quality handheld refractometer has an aluminum alloy body, rubber grip, and adjustable focus. It doesn’t corrode, and since it is analog, it can also save you money because it doesn’t need batteries to operate, sparing you from buying replacements..
  • Complete Care Set --- This portable measuring device c....
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FJDynamics Digital Brix Refractometer with ATC, Range 0-32%, Rechargeable Refractometer, Refractive Index, Measurement for Salinity, Fruit, Beer, Wine, Resolution 0.05%, Accuracy±0.1%

  • Multi-Function – Test Brix, Salinity, suitable for fruit and vegetable growers, maple syrup producers, home wine brewing hobbies. Used for food, fruit, beverage, coffee, wine, etc..
  • High Precision & Fast measurement — Accuracy ±0.1%, Resolution 0.05%, Meter Range 0-32%, to get the results within 2s..
  • Accurate Readings With ATC — Built with Automatic Temperature Compensation (ATC), FJD brix refractometer delivers accurate readings even if the measurements are in different temperatures (between 5°- 45°C)..
  • Waterproof & Durable — IP67 Design makes it possible for you to wash the refractometer with flowing water. Pretty durable to pass the 1.5M dropping test..
  • Portable FJDynamics Refractometer — Compact in size and light in weight, easy-to-read OLED screen, fast charging. It takes only 1 hour to be fully charged..
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Brix Refractometer with ATC - Tiaoyeer Digital Handheld Refractometer for Beer Wine Brewing, Dual Scale-Specific Gravity 1.000-1.130 and Brix 0-32%

  • ACCURATE READINGS : The Brix refractometer can measure brix between 0-32%±0.2% and Specific Gravity between 1.000-1.130, Brix Accuracy: +/-0.2%..
  • ADVANCED AUTOMATIC TEMPERATURE COMPENSATION（ATC）TECHNOLOGY (10℃~30℃)： Adjust Automatically to Compensate for Temperature, Which makes it even easier to get fast results..
  • SIMPLY USE: Using the dropper to take a sample of wort and put it on the prism. Then hold the refractometer up to the light and look scale through the eyepiece, more accurate to measure sugars in verities of melon, fruits or juice..
  • WIDE USE: The Brix Refractometer is ideal for Home Brew, Agricultural, Gardening & Educational Purposes, sugar content..
  • PORTABLE SUGAR CONTENT TESTER: Easy to use, sturdy design, compact in size and light in weight, convenient to keep up and carry around..
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iTavah Brix Refractometer with ATC, Hydrometer for Wine Making and Beer Beer Brewing, Dual Scale, Brix 0-32%, Specific Gravity 1.000-1.130

  • DUAL SCALE:Rapidly and precisely display the Brix (0-32%) and Specific Gravity (1.000-1.130) at the same time, no need to switch unit for readings each time!.
  • ACCURATE READINGS WITH ATC: Hand Held Brewing Refractometerr with Automatic Temperature Compensation(ATC), the brix refractometer will account for changes in ambient temperature and automatically compensate accordingly to Provides accurate and repeatable measurements on easy to read scale..
  • EASY TO USE: Just take a drop or 2 of your brew on the prism and hold the refractometer to the light, then look through the eyepiece to get the reading. No lookup table needed and no waste!.
  • UNIVERSAL FIT: Ideal for Home Brew, Wine making, Agricultural, Gardening & Educational Purposes..
  • PORTABLE COMPACT PACKAGE: The refractometer comes with dropper, screwdriver, user manual and cleaning cloth, all included in a hard compact case, the item dimensions is 8"x3"x2.
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SMARTSMITH Car Antifreeze Refractometer °F Dispay 4 in 1 Ethylene Glycol, Propylene Glycol in Antifreeze Liquids Freezing Point Temperature and Freezing Point Concentration, Automotive Battery Liquid

  • °F UINT,US BASED DESIGN:You may already got frustrated with those °C display or not American unit.Unlike most other companies,as a US designed brand,our refractometer designed showing °F,only one unit system.With the indication you may easily know the freezing point of either ethylene glycol or propylene glycol based cooling systems,check the window washer Fluid..
  • 4 IN 1 DISPLAY&EASY TO USE:Ethylene Glycol: -60°F-32°F,Propylene Glycol: -60°F-32°F,Battery SG: 1.100-1.400sg,Urea:30%-35%,Windshield Washer Fluid: Ethanol + water :32°F to -40°F, propylene glycol + water (SRF1): 32°F to -40°F。With the 4 in 1 display,you can master full condition of your car,track.A must have item for your cars.Only takes about 2 drops of solutions to get your readings easily.Designed for simple use,No look up table,only 2 steps ,2 drops and even 1 glances to know your reading..
  • ATC(AUTOMATIC TEMPERATURE COMPENSATION):Handheld antifreeze refractometerr with Automatic Temperature Compensation(ATC),no more worry about the temperature change will influence the reading accuracy.the refractometer will account for changes in ambient temperature and automatically compensate accordingly to provides accurate and repeatable measurements..
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Brix Refractometer for Homebrew Beer Wort, Hobein Dual Scale Automatic Temperature Compensation 0-32% Specific Gravity Hydrometer with ATC

  • ❤DUAL SCALE:Rapidly and precisely display the Brix (0-32%) and Specific Gravity (1.000-1.130) at the same time, no need to switch unit for readings each time!.
  • ❤ACCURATE READINGS WITH ATC: Hand Held Brewing Refractometerr with Automatic Temperature Compensation(ATC), the brix refractometer will account for changes in ambient temperature and automatically compensate accordingly to Provides accurate and repeatable measurements on easy to read scale..
  • ❤EASY TO USE: Just take a drop or 2 of your brew on the prism and hold the refractometer to the light, then look through the eyepiece to get the reading. No lookup table needed and no waste! More accurate to measure sugars in verities of melon, fruits or juice..
  • ❤WIDE USE: Ideal for Home Brew, Wine making, Agricultural, Gardening & Educational Purposes.Best choice for homebrew, wine making, and other purposes..
  • ❤PORTABLE DURABLE & WARRENTY : Made with non-staining, non-corrosive and non-reactive aluminum material, light-weighted and portable, safe and durable. If you have any issue with your brix refractometer,please do not hesitate to contact us - your satisfaction is paramount!.
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Ade Advanced Optics Beer Wort and Wine Refractometer Double Scale 1.000-1.120 S.G + Brix 0-32%

  • Ade Advanced Optics dual range refractometer measures the brix and specific gravity of your wort or wine.
  • Measures brix: 0-32 percent and specific gravity: 1.000-1.120.
  • Features atc (automatic temperature compensation) for accurate readings.
  • Aircraft aluminum body, premium optical lens, rubber eye guard.
  • A refractometer is easier and more accurate than a hydrometer for measuring sugars.
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Robinair 75240 Coolant and Battery Refractometer

  • Robinair's Coolant and Battery Refractometer is designed for use in measuring the freeze point of propylene or ethylene glycol based cooling systems and for checking the strength of electrolyte solution batteries.
  • Precision instrument features high-quality optics with ultra smooth focusing to ensure reliable, accurate test results.
  • When a liquid (such as coolant or charging liquid) is placed on the tools prism, the light passing through it is bent - the more concentrated the liquid, the more the light will bend.
  • Scale range: -60 degrees Fahrenheit to +32 Fahrenheit.
  • Complete kit includes refractometer with rugged aluminum housing, eyedropper, screwdriver, vial of distilled water, cleaning cloth, foam lined rigid plastic case, and more.
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Antifreeze Refractometer in Fahrenheit, 4-in-1 Anti-Freeze Coolant Refractometer Tester for Checking Freezing Point of Automobile Antifreeze System, Battery Fluid, Glycol, Coolant, Antifreeze Tester

  • 4-in-1 Tester - Measuring Freezing of automoblie antifreeze based on ethylene glycol or propylene glycol -60℉ to 32℉. Measuring Specific Gravity of battery acid 1.10 to 1.40Kg/L. Measuring of Windshield Washer Fluid based on ethanol or isopropyl alcohol -40℉ to 32℉. Measuring Urea Concentration in automobile diesel exhauset fluid (DEF) 30% to 35%.
  • Display In Fahrenheit - Updated antifreeze coolant refractometer in Fahrenheit (℉) display, allow you easy to read measured results by ℉ unit, no need to units conversion and save your time.
  • ATC Function - Coolant refractometer Fahrenheit can automatically compensate temperature when ambient temperature changes, eliminate the deviation, you can get the accurate results fast and easier.
  • Easy To Use - Only need 2 or 3 drops of solution and wait for few seconds, then you get the accurate results. These antifreeze tester needs less sample solution than tradistional hydrometer and less expensive then digital refractometer.
  • Durable And Portable - Antifreeze coolant tester is made of aluminum and ABS rubber, non-staining, anti-rust and stury for long perfermance. Comes with durable plastic box, portable and easy to take with you.
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