13 best salinity refractometers

• 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.

User questions & answers

Question:	will this work to test slightly brackish water for a livebearer aquarium
Answer:	Unsure about brackish water. It works fine e in saltwater aquariums with a specific gravity of 1.025. It tests between 1.000 and 1.040
Question:	Hi, i bought a calibrating fluid and calibrated my refractometer to sg 1.026 but when i test it on distilled water it reads 1.010. why is that
Answer:	I always test with RODI water
Question:	I want to test the brackish canal water to see if i can use it for irrigation. will this tester work? I was told to check the salinity of the canal
Answer:	Yes, brackish water ranges between 0. 05 to 30 PPT
Question:	Is this any use for hydroponics
Answer:	It is used for testing the salt water fish tank.

Product features

Salinity refractometer 0~100 PPT

Dual Scale

Specific Gravity and PPT. With this refractometer you can get the result in two different units at the same time in just one test.

ATC Function

This refractometer is equipped with automatic temperature compensation function, minimize the impact of temperature on accuracy.

Include

Comes with every thing you need: a hard case, droppers, a screwdriver, a user manual and a cleaning cloth.

The Scale Range

The scale range of this refractometer is 0~100‰ ( 1‰=1 PPT=1000PPM, PPT means"parts per thousand", PPM means"parts per million"), it also shows the corresponding specific gravity range 1.000 to 1.070. These are the most common units to show salinity of water. With this refractometer you can get the result in two different ways at the same time in just one test.

The min reading resolution is 1 ‰, this make it possible to mearsure low concentrated salt solutions.

For Marine Monitoring

For most sea, the salinty is between 30‰~35‰. So this refractometer is ideal for simple marine monitoring and research.

For Aquariums Water Monitoring

Ideal for aquariums or marine fishkeeping amateurs, cause they just need to make the salinity of water similar to the sea water.

For Swimming Pool Water Measuring

If you use a salt chlorine machine to disinfect your pool, you should make sure the salinity right first, normally the salinity should be between 3‰~7‰, this refractometer can help.

For Lab or Indurstry Purposes

Ideal for lab and indurstry use for testing salinity solution in the range of 0~100‰.

Is it complex to use a refractometer?

1. Calibration: Place a few drops of distilled water on the prism and use the screwdriver to adjust the calibration screw untill the reading is"0".
2. Measuring: Place a few drops of solutions you want to test on the prism and look into the eye piece, you will get the reading.

Note: The user manual will show you the details about how to use the instrument exactly, it very easy to use even for new users.

• 【Salinity Refractometer】Measure Salt Water or Salinity of Water,Monitor and Control the Concentration of Salt Water and Brine,Ideal for Aquariums and Marine Applications.
• 【Measures on 2 Scales】Specific Gravity (D 20/20) and parts per thousand and replaces your poor quality and difficult to read hydrometer.
• 【Density Measurement Range】1.0-1.070, Minimum Scale is 0.001.
• 【Concentration Measurement Range】0-100‰, Minimum Scale is 1‰.
• 【ATC】Automatic Temperature Compensation, 0-10°C.

User questions & answers

Question:	what battery does it use
Answer:	This salinity refractometer good for salt water test for aquarium, sea fish tank, marine monitoring and so on. It's pretty accurate and perfect for replacement hydrometer
Question:	can i calibrate this with RODI water
Answer:	Method of Using: 1.Calibration: just 2-3 drops of distilled water or fresh water, using mini screwdriver to calibrate. Through the eyepiece to check the blue line is on zero. 2. After calibration, place a 2-3 drops of test sample onto the Clean main prism 3. Close the daylight plate and hold it under a light source, then check the reading. 4. After used, use the cleaning cloth to wipe the prism and storage.
Question:	Can I use this to measure salt levels in my pool
Answer:	yes
Question:	Does it come with a calibration certificate
Answer:	Hi Peter! My name is Mike at Bel-Art/H-B Instrument & SP Scienceware. This Brine Salinometer is PERFECT for your pickling needs. There is a slight difference when reading at different temperatures, but it is very slight. I can provide a temperature conversion table if you are interested. Please email me at [email protected] and I can supply the information you need…

Product features

Salt meter with dual scale:

• Specific Gravity (D 20/20) and parts per thousand and replaces your poor quality and difficult to read hydrometer.
• Density Measurement Range: 1.0-1.070, Minimum Scale is 0.001
• Concentration Measurement Range: 0-100‰, Minimum Scale is 1‰
• Measuring Range: 0-10% Salinity
• Division: 0.2% Salinity
• Accuracy: ±0.2%
• ATC: 0-10°C
• Reference Temperature: 20°C

With ATC Function

The optic salt refractometer for saltwater

features an automatic temperature compensation of 0-10 °C, which is more accurate than conventional hydrometers.

For Aquariums Water Monitoring

Quickly read salt concentration of seawater specific gravity, ideal for aquarium or marine fish lovers

For Marine Monitoring

This saline solution tester is Portable and No battery required.Suitable for marine aquaculture.

Operation Instructions of Aquatic Refractometer:

1. Calibration: Accurate measurement depends on careful calibration. To calibrate the ATC salinity refractometer accurately, firstly you should make sure the ambient temperature is about 68℉.Recommend you do the calibration in an Air-conditioned room in which the temperature is set on 68℉. You can use distilled water to calibrate. Open the cover plate,place 2-3 drops of distilled water on the prism, then close the cover plate and make sure the water spreads across the prism without air bubbles or dry spots. Wait for about 30 seconds to let the reading to stabilize. Look into the eyepiece and turn the calibration screw with the screw driver until the reading is "0".

2. Clean the prism with soft cloth, and then place 2-3 drops of the liquid sample to be tested on the prism, look into the eyepiece and you can get the reading.

3. Clean the refractometer with soft cloth and put it back into the box.Keep the refractometer dry and clean, which can make the instrument accurate and durable.

Package Included:

• 1 x Handheld Salt Water Tester
• 3 x Plastic Pipette
• 1 x Mini Screw Driver
• 1 x User Manual
• 1 x Cleaning Cloth

Product description

This refractometer is design according to the principle that different concentrations liquid have different refractive index ,with quick and accurate characteristics.

Salinity refractometer is widely used for aquarium, marine monitoring, fish tank, seafood water tank, salty pools& spas and used for saline solution tester for education purpose or agricultural.



Features:

The salinity tester needs testing sample less than a traditional hydrometer, just 2 to 3 drops and wait for few seconds, you will get accurate readings.

Saltwater refractometer Specific Gravity (D 20/20) and parts per thousand and replaces your poor quality and difficult to read hydrometer.

Salt meter with dual scale: 0~100‰(1‰=1PPT=1000ppm, PPT means"parts per thousand", specific gravity range 1.000 to 1.070

Automatic compensation temperature (ATC) function makes the refractometer more accuracy, shifts in ambient temperature within 50℉-86℉ won’t effect the readings.

Easy to calibrate and easy to operate, optic salt refractometer no batteries required, more cheap than a digital refractometer.

Handheld salt water tester is made of non-staining, non-corrosive aluminum and ABS plastic, lightweight and easy to carry, durable to use for long time.



Method of Using:

1.Calibration: just 2-3 drops of distilled water or fresh water, using mini screwdriver to calibrate. Through the eyepiece to check the blue line is on zero.

2. After calibration, place a 2-3 drops of test sample onto the Clean main prism

3. Close the daylight plate and hold it under a light source, then check the reading.

4. After used, use the cleaning cloth to wipe the prism and storage.



Package Included:

1 x Refractometer

1 x Plastic pipette

1 x Mini Screw Driver

1 x Cleaning Cloth(Random color)

1 x Plastic Box



NOTE:

Accurate measurement depends on careful calibration

• 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

User questions & answers

Question:	Odd question but can this be used for urine specific gravity
Answer:	Hi,it can't be used to measure finished beer.
Question:	I have been experiencing salt water in my fridge. Can I use this device to test how much salt water from fridge contains
Answer:	Hi,yes.
Question:	I'm setting up a salt water aquarium will this give a true reading or should I try a different one that is out there
Answer:	Sorry we haven't used it yet at our winery.
Question:	Does it come callibrated
Answer:	You have to take a measurement before fermentation and subtract another measurement after it is finished.

• 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

Product features

V·RESOURCING Seawater Salinity Refractometer

• This is Salinity Refractometer that is used to measure the salinity levels of saltwater aquariums and the worlds oceans.
• This unit comes with Automatic Temperature Compensation or "ATC". This feature allows you to get a reading outdoors when the temp is between 50℉-86℉(10℃-30℃).
• Ideal for aquariums, marine monitoring, Agricultural, Gardening & Educational Purposes.

Specification

• Salinity Test Range : 0 ~ 100 ppt (parts per thousand) with resolution 1ppt
• Specific Gravity (D 20/20) : 1.000 ~ 1.070 with resolution 0.001
• Accuracy : Salinity : +/- 1ppt (0.10%) ; Specific Gravity : +/- 0.001

How to Use

• 1.Open the daylight plate and place 2~3 drops of sample on the main prism.
• 2.Press the daylight plate lightly to get a dividing line.
• 3.Looking inside and read the relevant scale for dividing line.
• 4.Twist clockwise or counter-clockwise until reticle scale can be see clearly.
• 5.Reticle scale inside the refractometer.

Product description

Get Hanna and test with confidence! Designed to bring simplicity to salinity testing during the any process, the HI98319 Marine Salinity Tester measures conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are digitally displayed on the LCD. Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.). Comes with all the necessary solutions and batteries- everything you need to get started measuring right away. Ideal for testing salinity in aquariums, field, and industrial settings. **For best results, please calibrate monthly.**. {To ensure accuracy of measurements: Use fresh calibration standards for each calibration. Rinse the tester with purified water and dry off with a soft tissue before calibrating or taking measurements. Calibrate monthly with regular use or more often with frequent use. Inspect the tester to see if foreign material is detected in the openings housing the electrodes. A more thorough cleaning may be made using a non-abrasive detergent, and a soft material such as cardboard, to dislodge the material. Rinse thoroughly with a steam of running tap water and jetting the steam through the opening. Shake excess water and rinse in purified water. Dry off and recalibrate the tester before using. Store with the protective cap on.} *Remember the black button to change the settings is underneath the battery cover* Care and Maintenance To ensure accuracy of measurements: Use fresh calibration standards for each calibration. Rinse the tester with purified water and dry off with a soft tissue before calibrating or taking measurements. Calibrate monthly with regular use or more often with frequent use. Inspect the tester to see if foreign material is detected in the openings housing the electrodes. *Rinse thoroughly. *Store with the protective cap on.

• Waterproof and floats!
• Includes 4x of the Salinity Calibration Fluid Packets.
• Automatic Calibration – A 35.00 ppt solution is used for calibration and automatically recognized when in calibration mode.
• Displays results in parts per thousand (ppt), Practical Salinity Units (PSU), or specific gravity (S.G.)
• Salinity readings are performed by an amperometric graphite probe that resists oxidation, providing better repeatability in measurements. The use of graphite also reduces the polarization effect common with testers that use two stainless steel pins.

User questions & answers

Question:	What is the factory margin of error
Answer:	Yes it can. Salinity and temperature. Does a great job of both.
Question:	Is this accurate when mixing salt and setting your salinity for water change. Iv heard can be off a little when hadn't been mixed that long
Answer:	Yes, mine is always off -.002 compared to refractometers. All devices calibrated. Talk to Hanna support and was told it won’t match a refractometer lol. I like it because it’s fast and easy, if I want my water at 1.026, I just make sure the Hanna reads 1.023 I guess others haven’t had this problem but I do, or the others don’t know their salt mix is high
Question:	Can this be used to measure salinity of saltwater fish tank aquarium? Thanks
Answer:	2 inches
Question:	Have you tested the device against another? Inaccurate compared to calibrated refractometer
Answer:	Two AAA batteries

Product description

American Marine PINPOINT Salinity Monitor PINPOINT Salinity Monitor will accurately and immediately measure the amount of salt in any marine or freshwater system. The reading is fully temperature compensated and the conversion chart will precisely show the corresponding density (specific gravity) or % salt (refractometer) values. Every saltwater aquarist should own this monitor . the accuracy is superb! This monitor is especially useful to determine the low level of salt required for Koi, whether in an aquarium or outdoor pond. Comes complete with meter, probe and calibration fluid.

User questions & answers

Question:	Can the cable be extended to measure deep sea water
Answer:	Dear customer, both are ok, very easy to set it in Fahrenheit or Celsius please read the manual in the box, all is English file.
Question:	Will this work for saltwater pool with chlorine generator
Answer:	Hi, this product is suitable for all groups of people, including adults and children.You can set a silent mode if you need to measure the baby when whom are in deep-sleeping.
Question:	Can this be used 24/7 in a saltwater aquarium or will the probe start to corrode over time
Answer:	We don't recommend any of our thermometers for measuring human body temperature.
Question:	Is this supposed to be used 24/7 or be turned on and off for each use and be taken out
Answer:	A calibration certificate is not included with this product.

Product description

Cora life's Hydrometer takes a true water sample at six inch depth. Easy to read and accurate, this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums. Includes a self-leveling, hanging device and allows your hands to stay dry, avoiding contamination of aquarium.

• Included components: All Components included in Picture and Description
• Cora life is one of the markets leading manufacturers of premium aquarium products
• Cora life's Hydrometer takes a true water sample at six inch depth
• Easy to read and accurate, this specific gravity meter is designed to give temperature-corrected readings in warm water aquariums
• Coralife is one of the market’s leading manufacturers of premium aquarium products
• Coralife's Hydrometer takes a true water sample at six inch depth

User questions & answers

Question:	It says "fill with salty water and allow it to sit for 24 hrs". anyone following that and find it helpful? my new one is off
Answer:	I purchased mine for testing the spoil pH and watering needs and they both seem to be very accurate. I do not know how accurate it is for light testing. I do not know what your application is for, but if it's to see how much light is present for growing a garden, then you need a minimum of 6 hrs of sunlight a day, preferably 8. Of course it also depends on what you are trying to grow, some plants need much more than others.
Question:	Can it be left inside the aquarium for continuous readings
Answer:	Since soil most often is in/close to neutral state (with pH value of 7), when you use it to test the pH value of soil, it is highly likely that you find the needle in display window stay still (because the default pH value is set at somewhere between 7 and 8) . The needle will not swing substantially unless the meter in soil with strong acidity or alkalinity. Customers sometimes are misled by this appearance and hence regard the tester as a defective unit by mistake. Here are the steps of How To Use this soil meter: Step 1: Gently wiped the probes all the way up and down with dry cloth a few times before use Step 2: Push the switch to MOIST or PH or LIGHT position Step 3: Stick the probes into the soil 4-6 inches (2/3 of the probes) or more deep Step 4: Adjust the position of the probe until the pointer on the dial swing slightly Step 5: Note moisture/pH/light level in the dial Step 6: Remove probes from soil and wipe clean with dry cloth after each use Tips: This soil meter is designed to measure moisture and ph level of soil, so it CAN ONLY be used in soil, it CANNOT be used to test any liquids, such as pure water, lemon juice, vinegar and so on, or the probes may be damaged.
Question:	I want this to test my fresh water aquarium i fill with softener water. Will it work
Answer:	Yes there is a small piece of sponge material in the cap that you can apply storage solution whenever you plan to leave the cap on. I recommend that if you will be using your pen daily, you get a small glass cup ( the 100ml measuring cups work ideal) and keep storage solution in this cup and keep pen placed in this as opposed to removing and replacing cap continuously. I generally mix 20ml of storage solution with 30ml of distilled water to keep in cup for pen.
Question:	Does this work with swimming pools
Answer:	These are great pens for the hobbyist just remember when you do not see the check mark on your pH pen or on your PPM EC conductivity bluelab pen it is time to calibrate if you do not see this check mark displayed on either pin on the screen calibrate. I also recommend using the 7.0 bluelab calibration solution followed up by the 4.0 bluelab calibration solution to get a more accurate reading of the pH solution. Also use blue lab calibration solution for your conductivity meter as well these meters will last a very long time I had mine for almost 4 years and still in good shape keep your meters clean keep your pH bulb moist in store in the pH storage solution that is made by blue lab. Never let the bulb go dry if you do it will take 24 hours or it is good to give 24 hours to rehydrate your pH bulb. And if I'm not mistaken on the bottles the calibration solution of either your conductivity meter solution for calibration or your pH pen calibration solution it says on the bottle after opening don't use after three months I don't know if this matters a whole lot or not but I've used my solution over three months plenty of time and no noticeable difference in this. I guess the main thing is to keep your pH pen glass bulb hydrated I believe that this is probably the most important thing when owning a blue lab pH testing pin. If there is anyone to add to this conversation or to give me any advice that's positive please do so I am always willing to learn and listen so please if anyone has any experience with these pins other than me and something that I may not have mentioned or know please tell me or leave a review thank you I hope this has been helpful. And please stay positive with positive feedback just remember people there are no stupid questions and no mistakes only lessons thank you.

Product features

Coralife Energy Savers ACLAF877 Deep Six Hydrometer

The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other flat surface when taking salt readings.

Features:

• Specific Gravity and Salinity PPT Scales
• Optimal Specific Gravity / Salinity range indicator on scale
• Bubble diffuser on water intake prevents micro-bubbles from forming on needle

• Upgraded Quality
• Partable Hard Storage Box
• Dual Salinity Scale
• Automatic Temperature Compensation
• Full 12 Month Replacement Warranty

User questions & answers

Question:	Does this one refractor have light built in it ? Really cool if had a tiny solar cell ..never needing a battery ! (Idea
Answer:	This refractometer is used with outdoor or bright lights. You put your frac or producer water on and point it in the light to get your salinity level. No battery ever required for that. Now... if it’s used for something other than testing chlorides... I don’t know how it’s used.
Question:	What's the dimensions of the case this product comes in
Answer:	The plastic case is about 8.2 (L) X 3.5 (W) X 2.2 (H) in inches.
Question:	How often do you re-calibrate, and when would you know if it needs to be re-calibrated
Answer:	I would check about every month or so. As for when you would know if it needed re-calibration just put a few drops of fresh water on lens and see if it reads 0. If it doesn't re-calibrate.
Question:	Can I use it fot beer
Answer:	I have a brewing refractometer and tried using it to read salinity and it just read 0 on my tank and my pond so I'm guessing there is a difference between the two. I wouldn't have thought so.

Product features

High Quality

It features high-quality optics with smooth focusing. Its main body is made of aluminum alloy. The internal optical lens with high refractive index make up the precision optical system.The instrument is resistant to abrasion and corrosion, can be used to measure the salinity of general corrosive liquid. (But we do not recommend measuring these liquids for a long time. The residue should be cleaned immediately after measurement. )

ATC Function

For regular refractometer without ATC function, slight temperature change can affect the accurate of salinity measurement, but our brand refractometer is equipped with automatic temperature compensation part inside, during normal temperature, once calibrated, the temperature change would never affect the accurate of your measuring result. This makes it more convenient to use in different temperature.

Dual Scale

This measures on 2 scales - specific gravity (D 20/20) and parts per thousand, scale range: 1.000 to 1.070 specific gravity and 0 to 100 per thousand salinity ( or say it 0-100 ppt), the reading resolution is 0.1 %, accuracy: +/-0.1%.

With this refractometer, you can get two readings at the same time in just one test, and the scale makes it possible to measure very low concentrated salt solution.

Portable & Easy

This refractometer is compact in size and light in weight, it comes with sturdy storage box, and it needs no battery, it is convenient to keep up and carry around.

It's super easy to use, just need 2-3 drops of solution and a few seconds, you can get accurate readings, and with the direction of the user manual, you will learn how to calibrate and use the refractometer easily.

It comes with every thing you need:

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Include: 1.A Refractometer + 2.A Firm Box + 3.A Cleaning Cloth + 4.A Screwdriver + 5.A User Manual + 6.Some Pipettes

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Calibration

Accurate measurement based on carefully calibration, please calibrate the refractometer before your first use. The calibration is very easy, the product comes with a detailed operation manual, which will show you how to calibrate and operate it exactly. During normal temperature (50℉ to 86℉), you don't have to calibrate it frequently, once every a few months is OK, but during temperature below 50℉ or higher than 86℉, we still recommend you recalibrate it before use to make sure the best accuracy.

Brief Operation Step

After calibration, ​clean the prism with soft cloth, and then place 2-3 drops of the liquid sample to be tested on the prism, then close the cover plate and make sure the sample spreads across the prism without air bubbles or dry spots. Wait for about 30 seconds to let the reading to stabilize. Align the prism assembly with the light source, look into the eyepiece and you can get the reading.

Product description

Milwaukee MA887 Digital Salinity Refractometer with Automatic Temperature Compensation, Yellow LED, 0 to 50 PSU, +/-2 PSU Accuracy, 1 PSU Resolution has a number of industrial applications. Samples are measured after a simple user calibration with distilled or deionized water. Within seconds, the refractive index and temperature are measured and converted into one of three popular measurement units; Practical Salinity Units (PSU), Salinity in parts per thousand(ppt), or Specific Gravity (S.G. (20/20))

• Laboratory tested
• Yellow led display

User questions & answers

Question:	I've had my ma887 for year now. seems to calculate 35ppt at 1.027 s.g. anyone else's unit do this
Answer:	I've always just dried it with a cloth or paper towel. Anything really. Been doing it for years
Question:	why i get ppm 38 with aqua Craft calibration Solution
Answer:	We do. It's just that they use the same UPC code for both and Amazon doesn't recognize the difference. Give us a call for that one.
Question:	How do you clean it, after each use? Just rinse it out
Answer:	Yes. You can use this meter with the soil "slurry" technique by adding distilled water in the soil sample.
Question:	Why don't you carry the hard shell & padded case - Model #MA
Answer:	As a rule of thumb, we recommend replacing the one after one year of regular use to ensure the best accuracy.

Product description

• Handheld portable refractometer for measurement of salt concentration in parts per thousand (PPT) (0 to 100%) and specific gravity (SG) (1.000 to 1.070) of seawater in the 10 to 30 degrees C temperature range
• Automatic temperature compensation (ATC) for immediate and accurate calibration readings, regardless of ambient temperature
• Ambient light illuminates the scale; no additional power source is required
• Durable metal and rubber outer shell with a telescope-shaped, streamlined design (40 x 40 x 185mm), a rubber grip to guard against hand heat for accurate measurements, and a non-roll stand to protect against damage
• Optical glass prism mounted in all-metal housing for quick temperature equilibrium between sample and prism

User questions & answers

Question:	Comes with the screwdriver and manual to calibrate? Serve for salt water at temperatures greater than 30 degrees Celsius
Answer:	Made in China. If it were made in the USA it would cost 2-3 times as much.
Question:	We have fish farms (fresh water), some seawater leak and we want to measure water salinity, last time it was around 7-10 PPT, Will this device work
Answer:	I have worked with a few different meters, and this one is about the same as the others when it comes to volume. I use it for continuity all the time and some of the places I'm in are not the quietest. I would say average on sound....You can also turn the sound off if you want. I cannot see a way to turn the volume up. Its either on or off.
Question:	I noticed that most use this for aquariums, but can this be used to test salinity in my well water
Answer:	Dear customer,it need 2* AAA batteries,please Kindly note that batteries not Included in the package due to safety concern
Question:	If you are testing the salinity in different tanks at the same time, does the refractometer meter need to be calibrated before testing tank testing
Answer:	We use it now since 5 weeks every day on every patient and have not changed the batteries

User questions & answers

Question:	Unit doesn’t stay calibrated any more still under 1 year how can I get replacement
Answer:	Suction tube will be fine if it's a freshly opened bottle
Question:	Is the eyepiece adjustable to allow you to focus on the values you're looking at
Answer:	First, you would have to define “easily readable”. I have terrible eyesight and bifocals. I need my son to read the numbers because they are so tiny through the eyepiece. It measures quiet accurately and is the gold standard for saltwater aquariums. However, I don’t know if it would work quite as well on a ppt scale. The device measures in specific gravity numbers and ppt. It does read to 0 on the ppt side, but I can’t be sure if it will be that specific for you. You may want to start with the cheaper hydrometer or a more expensive electronic reader. Check out WikiHow’s How to measure salinity. It gives directions on 3 different ways.
Question:	Is suction tube long enough or I need to buy wine thief as well
Answer:	I have had the same problem and you can calibrate it with distilled water, but mine was still off by 2ppm regardless.
Question:	Hoping to test salt level in a fresh water pond which requires 5 ppt, would this be easily readable with this device
Answer:	I don't understand your question - can you re-phrase it?

Product features

Dual Scale Seawater Salinity Refractometer

• 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 .

-

Dual Scale

The scale range of this refractometer is 0~100‰ and the corresponding specific gravity range 1.000 to 1.070. These are the most common units to show salinity of water.

With this refractometer you can get the result in two different ways at the same time in just one test.

The min reading resolution is 1 ‰, this make it possible to mearsure low concentrated salt solutions.

( 1‰=1 PPT=1000PPM, PPT means"parts per thousand", PPM means"parts per million")

1

Calibration: Place a few drops of distilled water on the prism and use the screwdriver to adjust the calibration screw untill the reading is"0".

2

After calibration, place a few drops of solution you want to test on the prism.

3

Close the daylight plate and hold it under a light source, then look through the eyepiece, you can get the reading.

4

Clean the instrument with a soft cloth after use, and put it into the storage case.

Product description

The usual salinity of selected aqueous solutions



Example:Salinity 36 ppt means that there are 36 grams of salt in 1 liter aqueous solution.

Fresh water ------<0.5 ppt

Brackish water---0.5 to 30 ppt

Saline water------30 to 50 ppt

Brine-------------->50 ppt



Measurement



The liquid measurement is very easy. Place a few drops of the liquid on the optical part of the refractometer, cover the prism (the liquid will spread more easily over the prism), look throught the eyepiece

against the light (focus, if necessary) and you will be able to read the result value on the scale.



General technical parameters



· reference temperature 20 C

· ATC - automatic temperature compensation (compensation range 0 ~ 30 C)

· focus possibility

· length ~ 175 mm

· quality technical design



Content and equipment



· a firm plastic case

· a refractometer

· a cleaning cloth

· a suction tube

· a screw driver

· operating instructions



Note: Keep the refractometer dry and clean , which can make the instrument accurate and durable.



Warranty: Full 12 Month Replacement Warranty & Any Questions Will be Answered within 24 Hours.

User questions & answers

Question:	will 0 to 28% calcium chloride solutions read high or low on the scale? by how much
Answer:	Yes I‘ve used it for years that way
Question:	When i look through the eye piece i do not see salinity in dbs like the instruction pictures shoe. instead i see sodium level and percentages
Answer:	This is a 24/7 monitor. You set it up and just run it all the time.
Question:	Will this work for measuring salt levels in brines for pickling
Answer:	No.
Question:	Do you guaranty that this device will measure 28% salinity in sodium chloride solution? i need its range at least that high
Answer:	no

Product description

PINPOINT Salinity Calibration Fluid is 53.0 mS standardized fluid for calibrating PINPOINT Salinity Meters as well as refractometers. PINPOINT Salinity Calibration Fluid calibrates to sg 1.026 or 35ppt. A must have to ensure your meter is calibrated. Conversion chart included. Shake bottle before use.

• Standardized fluid for calibrating Salinity Meters/Monitors as well as Refractometers
• Calibrates to sg 1.026 or 35ppt
• Conversion chart included