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The Best Refractometer Aquarium of 2023 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best Refractometer Aquarium of 2023. Check our ranking below.
2,345 Reviews Scanned
SaleRank No. #1
Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT with Automatic Temperature Compensation
- 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.
Rank No. #2
Aquarium Salinity Refractometer with ATC Function,Saltwater Test Kit for Seawater, Pool, Aquarium, Fish Tank.Dual Scale: Specific Gravity & Salt Percent
- DESIGNED FOR - testing the concentration of saltwater, help you to monitor and control the concentration of salt water.
- WIDELY USE - Can be used for Aquariums, Marine Monitoring, Agricultural, Gardening & Educational Purposes.
- EASY , ACCURATE & AFFORDABLE - This refractometer is more accurate and easier to use than traditional hydrometers, more affordable than digital refractometers.
- DUAL SCALE -- Provides reading of 0-100PPT(parts per thousand ) and corresponding specific gravity range 1.000 to 1.070. You can get the both result at just one test.
- AUTOMATIC TEMPERTURE COMPENSATION --The build-in Automatic Temperature Compensation feature makes it get consistently accurate reading, no need to control the liquids temperature deliberately, just make sure it's at roomtemperature .
Rank No. #3
ALLmeter Salinity Refractometer Saltwater Aquariums Dual Scale 0-100 PPT & Specific Gravity 1.000-1.070 Salinity Tester Meter with ATC Function for Marine Monitoring,Fish Farming,Pool Hydrometer
- Durable and Portable: This aquarium salinity tester is constructed with non-corrosive aluminum, making it lightweight, durable, and easy to transport. Our salinity refractometer includes a sturdy case, 3 droppers, a screwdriver, a user manual, and a cleaning cloth for added protection and long-lasting use.
- User-Friendly Operation: Just add 2-3 drops of water, use the screwdriver to calibrate it to “0”, wipe the prism, add the sample, wait for 30 seconds, align it with light, and adjust the focusing ring for clear readings.
- Wide Measurement Range and Clear Dual Scale: Measures salinity from 0-100‰ (0-100PPT) and specific gravity from 1.000-1.070. The dual scale display and clearly marked readings ensure easy and accurate interpretation.
- Precise Salinity Measurement: The ALLmeter refractometer delivers accurate readings of salt content in water, making it perfect for aquariums, marine monitoring, fish cultivation, and residential swimming pools. With automatic temperature compensation (ATC), it provides fast and dependable results.
- Versatile and Reliable: Suitable for aquariums, marine monitoring, fishkeeping, agriculture, and home swimming pools. Specifically designed for saltwater aquarium salinity measurement.
SaleRank No. #4
AUTOUTLET Salinity Refractometer Saltwater Aquarium for Seawater, Pool, Tank, Marine, Fishkeeping, 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function Salinity Hydrometer Kit
- 【AUTOUTLET Salinity Refractometer】This salinity tester is used to measure salinity of brine/seawater, monitor and control the concentration of saltwater. Ideal for aquariums and marine applications.
- 【Measures on 2 Scales】This saltwater hydrometer measures on dual scales: specific gravity and salinity. Ideal for aquariums, marine monitoring, agriculture, gardening and educational purposes.
- 【Measurement Range】Density of 1.0-1.070 with min scale of 0.001. Concentration of 0-100‰, with min scale of 1‰ (1‰=1PPT=1000PPM, PPT means “parts per thousand”, PPM means “parts per million”)
- 【With ATC Function】ATC compensation Range (i.e. Built-in Automatic Temperature Compensation System) from 10℃ to 30℃.
- 【Solid and Lightweight】Salinity meter is made of durable aluminum, which is non-staining, non-corrosive and rustless. Also, it's compact in size with rubberized grip handle, very easy to carry.
Rank No. #5
CYCLOPS INSTRUMENTS Professional Salinity Premium Refractometer for Seawater, Marine Fishkeeping Aquarium, Pools, and Tanks, 0-100 PPT Salinity Tester with Automatic Temperature Compensation (ATC)
- CYCLOPS INSTRUMENTS refractometer is a precise and efficient tool for measuring salinity in saltwater aquariums or salt water pools..
- It is commonly used as a salinity tester for saltwater aquariums and provides accurate readings of the water's salinity levels.
- Unlike hydrometers, refractometers are more reliable for easy and quick measurements.
- Saltwater refractometers are specifically designed for saltwater pools or aquarium use, ensuring accurate and consistent readings of salt content.
- Other alternatives for testing salinity in aquariums include hydrometers and salinity meters, but refractometers are often the preferred choice due to their accuracy and ease of use.
SaleRank No. #6
SunGrow Measure Salinity of Water with Aquarium Refractometer, Remarkable Accuracy, Easy Reading
- Specifically Designed Refractometer For Saltwater Aquarium --- The algorithm is made specifically for testing seawater and saltwater. This is different from a standard refractometer which is not calibrated to check salinity of aquarium water and will give an error in your readings.
- Automatic Temperature Calibration --- The calibration process should be carried out with both the room and the instrument at 68° F. The refractive index of a liquid changes with temperature. Due to the automatic temperature calibration, any changes in ambient temperature from 50° F- 86° F will not affect the accuracy of the reading.
- Easy And Clear Reading For Saltwater Aquariums And Reef Tanks --- The refractometer comes with a focus adjustment on the eyepiece, this will give you clarity of the optics and a sharp line for easy reading.
- Comes In A Solid Case Includes Pipette And Calibration Tool --- This refractometer is not only built extremely well, but it comes with a durable hard case for easy storage of the refractometer when not in use. It also includes a calibration tool and a pipette.
- Vitality of your marine or reef aquarium. Use this refractometer to measure the salinity of the water, the target level of salinity in a reef tank should be 35 ppt.
Rank No. #7
Seawater Salinity Refractometer,V-Resourcing Automatic Temperature Compensation Sea Water Salinity Measurer for Aquarium, Hydrometer, 0-100ppt & 1.000-1.070 Salinity Specific Gravity
- Automatic Temperature Compensation: 10℃~30℃
- Measuring range: salinity: 0-100 ‰, Specific Gravity : 1.000 to 1.070
- Minimum scale: salinity: 1 ‰, Specific Gravity : 0.001
- Resolution: salinity: ±1‰, Specific Gravity : 0.001 mm
- Perfect for salty water tank and aquarium, seafood water tank, salty pools & spas and etc
SaleRank No. #8
Hallocool Salinity Refractometer for Saltwater Aquarium Marine Seawater Fishkeeping, Dual Scale Salinity Tester Refractometer 0-100PPT & 1.000-1.070 Salinity Hydrometer with ATC
- MEASURES ON 2 SCALES - Aquarium Refractometer features specific gravity (D20/20) 1.000-1.070 and parts per thousand 0~100‰ ( 1‰=1 PPT=1000PPM), allow to get two results in different units by one test
- WIDELY USE - Salinity Refractometer measures saltwater, salinity of water or seawater, ideal for aquariums, marine monitoring, fish-keeping, and saltwater pools
- ATC FUNCTION - Saltwater refractometer with automatic temperature compensation (ATC) function, allow you to obtain the accurate result faster and easier
- EASY TO USE - Put 2-3 drops of sample on the refracotmter’s prism, towards light, read the accurate readings through the optics eyepiece directly
- DURABLE MATERIAL: The optic salinity tester is made of aluminum and ABS rubber, anti-rust, non-staining and resistant abrasion. Portable Refractometer comes with plastic case, mini screwdriver,a dropper and a cleaning cloth
Rank No. #9
AccuBrate Refractometer and Hydrometer Salinity Calibration Fluid – Solution to Accurately Calibrate Refractometer and Hydrometer for Testing Natural Saltwater or Synthetic Sea Water (60 ml)
- REMARKABLE PERFORMANCE! AccuBrate calibration solution is specifically formulated to calibrate hydrometers and refractometers to accurately measure the salinity of saltwater, reef aquariums as well as natural sea
- ACCURATE RESULTS! Our calibration solution is formulated from a high purity blend of salts to produce accurate readings every time. Hydrometers must be calibrated often to obtain accurate readings. Note: RO/DI water will not calibrate your refractometer correctly. Always use AccuBrate to ensure correct salinity readings - your aquatic friends will love you.
- EASY TO USE: Our specially designed bottle has a built-in dropper tip which eliminates the need for a pipette. Simply squeeze a few drops of AccuBrate directly from the bottle onto the refractometer’s prism slide and you are ready to calibrate your instrument. (Drops come out at a very controllable rate.)
- LONG-LASTING: You need just 2 to 3 drops of our calibration solution to calibrate a refractometer. Using a few drops means our 60 ml bottle should last a very long time. For best results calibrate refractometer often to ensure accurate readings.
- RISK FREE! Does this come with a money back guarantee? YES! Your purchase comes with a full 90 day no-risk, no-nonsense 100% Money Back Guarantee. Either you're thrilled, or we don't want your money!
SaleRank No. #10
Professional Automatic Temperature Compensation Salinity Refractometer for Aquariums, Marine Monitoring, Saltwater Testing.Dual Sacle: 0-100ppt & 1.000-1.070 Specific Gravity
- Upgraded Quality
- Partable Hard Storage Box
- Dual Salinity Scale
- Automatic Temperature Compensation
- Full 12 Month Replacement Warranty
Rank No. #11
aichose Brix Refractometer with ATC, Dual Scale - Specific Gravity & Brix, Hydrometer in Wine Making and Beer Brewing, Homebrew Kit
- It's designed for testing the suger content and specific gravity of liquid.
- Ideal for Home Brew, Wine making, Agricultural, Gardening & Educational Purposes.
- Consistently accurate readings of 0-32% Brix and 1.000-1.120 Specific Gravity.
- Automatic Temperature Compensation makes it even easier to get fast results.
- Durable and Easy to Use & Carry -- The main part is made of chromium, it's light but durable.
Rank No. #12
Continuum Reagents Refractometer Calibration Standard – Seawater Reference for Calibration of Density Measuring Equipment, 60 ml
- Designed to provide an accurate reference for the calibration of seawater refractometers, hydrometers and other density measuring equipment
- 35 ppt Salinity
- 1.0264 Specific Gravity
- 1.3394 Refractive Index
- 53 uS/cm at 25 deg c
Rank No. #13
Rank No. #14
Salinity Refractometer for Seawater Aqaurium Fishkeeping Salinity Tester Meter Dual Scale-Specific Gravity Salinity Hydrometer 0-100PPT & 1.000-1.070
- Dual Scale: this aquariums reqrium measures saltwater soultion and provides readings of 0-100PPT parts per thousand, Specific gravity 1.000 to 1.070SG, perfect for replace the salty hydrometer
- Widely Use: Saline meter is ideal for aquarium marine fish-keeping, saltwater pool, agricultural, gardening and lab education purposes
- Accurate Refractometer: Saltwater tester can automatically compensate temperatue when the ambient temp changes, which allows the refractometer measurement more accurate
- Simple to Use: salinity refractometer is easy to operate only 2-3 drops of sample solution after calibration, you can get the accurate reading through eyepiece quickly
- Durable & Portable: This saltwater meters are made of aluminum material, non-staining, anti-rusty and sturdy design, compact in size and lightweight, easy to operate and carry with
SaleRank No. #15
RZ Aquariums Salinity Refractometer for Seawater Marine Fish-Keeping, Dual Scales Specific Gravity Salinity Meter Hydrometer 0-100ppt & 1.000-1.070, Saltwater Tester with ATC Function
- Measures on 2 Scales: Aquariums refractometer features Specific Gravity (D 20/20) 1.000-1.070sg and parts per thousand 0-100PPT (1‰=1ppt=1000ppm)
- Seawater refractometer measures saltwater or salinity of water, ideal for aquarium, marine monitoring, fish-keeping,salty pools&spas and etc.
- ATC Function: salty water refractometer with automatic temperature compensation, allow you obtain accurate readings easier and faster
- Salinity Refractometer is made of aluminum body and ABS rubber light and very sturdy, comes with a hard plastic case, a mini screwdriver, a dropper
- Easy to Use: put 2-3 drops on the saltwater’s prism, towards light then to get the accurate readings through the optic eyepiece, ideal for replacement the poor quality and difficult to read hydrometer refractometer
Rank No. #16
Salinity Refractometer for Seawater and Marine Fishkeeping Aquarium 0-100 PPT - Dual Scale (1.0 to 1.070 S.G.) - Automatic Temperature Compensation
- Salt Salinity Refractometer With ATC - Dual Scale 0% - 10% & 1.0 to 1.070 S.G. Dual Scale Gravity Hydrometer. Designed for the safety transportation purpose, the very 1st open of the product case might be tight. Used for Seawater, Reef Aquarium, Kitchen use etc.
- Reading Scale 0-100 ppt : Our optical refractometer has scales ranged from 0 - 100 ppt (0 - 10 %). The reading resolution is 1 ppt. It is designed for the measurement of seawater (marine aquaria) or very low concentrated salt solutions. The second scale is for reading of the salt solution density ranged from 1.000 to 1.070 g/cm3 (resolution 0.001 g/cm3). For Reference of solutions: 1.Fresh water < 0.5 ppt 2.Brackish water -- 0.5 to 30 ppt 3.Seawater -- 30 to 50 ppt 4.Brine -- 50 ppt
- Measurement is easy: Place a few drops of the liquid on the optical part of the refractometer, cover the prism, and the liquid will spread more easily over the prism, look throught the eyepiece against the light and you will be able to read the result value on the scale. 10℃~30℃ / 50F ~ 86 F. For temperature beyond this range, please calibrate before use.
- Includes: a firm plastic case, 1x refractometer ,1x cleaning cloth, 1x suction tube, 1x screw driver, 1x operating instructions
- 1 Years Warranty by simply contacting us via Amazon purchase history
Rank No. #17
Soonkoda Dual Scales Salinity Refractometer for Seawater Marine Fishkeeping Saltwater Aquarium 0-100 PPT Salinity Tester Specific Gravity 1.000-1.070 brine Pool Hydrometer with ATC
- 【2 Scales】0-100ppt salinity and 1.000-1.070 specific gravity hydrometer
- 【Clear Scale】A clear dial can be seen through the eyepiece，easy to read;
- 【With ATC】With automatic temperature compensation, thus reducing the error;
- 【Rubber Grip】Rubber handle, non-slip and durable;
- 【Easy to carry】The portable canvas package is used to protect the instrument from damage
Rank No. #18
Salinity Refractometer for Aquarium Fish, Salt Water Testing, Dual Scale Salinity Tester PPT& Specific Gravity Saline Seawater Refractometer Hydrometer with ATC, Made of Copper Not Cheap Aluminum
- COPPER DURABLE: Made of Copper not cheap Aluminum, easy to clean and maintain.
- WIDE APPLICATIONS: Aquariums, Marine Monitoring, Agricultural, Fish Tank Saltwater Measuring, Gardening & Educational Purposes (Biology Projects) etc. Aquarium refractometer is ideal for replacement salinity hydrometers or expensive digital salinity tester.
- DUAL SCALES: Saltwater Refractometer measures on specific gravity (D20/20) 1.000-1.070 and parts per thousand 0~100‰, you can get the result in two different units by one test.
- ATC: Aquarium hydrometer features Automatically Temperature Compensate function and always provide you accurate readings fast.
- EASY TO USE: Only 2-3 drops of sample solution after calibration on prism, towards light, then can read the result fast and accurately.
Rank No. #19
TOOGOND Professional Salinity Refractometer for Saltwater Aquarium, Pools, and Tanks,Dual Scale 0-100 PPT & Specific Gravity 1.000-1.070 with ATC Function
- Salinity Refractometer：This refractometer measure salt water or salinity of water, ideal for aquariums and marine monitoring.
- Dual Scale: Measures on 2 scales, Specific Gravity (D 20/20) and parts per thousand. Density of 1.0-1.070 with min scale of 0.001.Concentration of 0-100‰, with min scale of 1‰
- With ATC Function：Features automatic temperature compensation.ATC：50℉-86℉ (10℃~ 30℃),No Batteries.
- Durable and Portable:The refractometer is made of aluminum and ABS rubber, anti-rust, non-staining and resistant abrasion.
- Includes：Salinity refractometer comes with a hard case, dropper, screwdriver, user manual,cleaning cloth and Portable USB LED Light easy to calibration and reading
Rank No. #20
LACHOI Salinity Refractometer with ATC Salinity Tester Specific Gravity 0-100PPT & 1.000-1.070 for Seawater Aquarium Mariculture Dual Scale Seawater Refractometer
- 【MEASURES ON 2 SCALES】The salinity refractometer festures density of measurement 1.0-1.070 and salinity measurement 0-100‰,that can get two different results by one test.
- 【ATC FUNCTION】This salinity refractometer features ATC function, no worry about the ambient temperature changes any more and can get the accurate readings.
- 【EASY TO USE】It is easy to use the salinity tester. After calibration,put 2-3 drops of sample solution on prism, and towards light,then get the accurate readings.
- 【APPEARANCE】: Be made of all aluminum alloy material,this lab salinity refractometer is durable has the advantages of simple structure, shockproof, convenient operation and portability, clear vision, etc.
- 【WIDELY APPLICATION】The salinity tester can be used for seawater,aquarium,artificial seawater,mariculture,fishing keeping,Agricultural and lab experiment.
Last update on 2023-07-29 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: What kind of refractometer do you use for fish?
A: When it comes to fishkeeping, there are two types of refractometers that are commonly used: 1. Handheld salinity refractometers (analog) This is the cheapest and most commonly used aquarium refractometer.
Q: How is a Refractometer used to measure the salinity of water?
A: And, it turns out that you can use refraction to determine the salinity of your aquarium. You see, light refracts differently according to the amount of salt that is dissolved in the water. A refractometer can “read” these differences, allowing you to accurately measure the salinity of your tank.
Q: What do you need for a temperature refractometer?
A: This refractometer is equipped with automatic temperature compensation function, minimize the impact of temperature on accuracy. Comes with every thing you need: a hard case, droppers, a screwdriver, a user manual and a cleaning cloth.
Q: Which is the best handheld refractometer for accuracy?
A: Best handheld refractometer for accuracy – Vee Gee Model number STX-3 Measurement scale Salinity PPT (0-100%), SG 1.000 – 1.070 Accuracy Salinity PPT +/- 1.0%, SG +/- 0.001 Warranty One year