AUTOUTLET Refractometer Saltwater Aquarium for Seawater,Pool,Tank,Testing,Marine Fishkeeping, 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function Hydrometer Specific Gravity Salinity Meter Kit
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You calibrate it by hand with distilled water.
Because the swimming pool's salinity is low and our products are typically used to test seawater, the measurement may be inaccurate.
Sorry for the previous response; the one I purchased came with instructions for calibrating it with olive oil or honey, but you can see in this description that they recommend distilled water (which has the same RODI parameters), so you can do it.
There is no need for a battery with this device.
Selected User Reviews For AUTOUTLET Refractometer Saltwater Aquarium for Seawater,Pool,Tank,Testing,Marine Fishkeeping, 0-100PPT & 1.000-1.070 Salinity Tester with ATC Function Hydrometer Specific Gravity Salinity Meter Kit
I needed to make sure the salinity was high enough, but not too high, because evaporation would cause it to rise too much. It was incredibly simple to use after calibrating it with reverse osmosis. You use the dropper to put a drop of water in, then close the flap and look through the eyepiece to see the blue line up to the number of salinty ppts. If you're like me and want to raise brine shrimp, this is the place to be. This is something I strongly advise you to get. The saltiness of the water is crucial, and my culture has been going on for more than six months.
All it took was a little tweaking to get it calibrated. Because only a few drops are required, I recommend including a small bottle of Refractometer Calibration Liquid with the package. It would persuade a large number of customers to choose your product over others. In order to make it a win-win situation, Both teams are victorious.
I used RO/DI water to calibrate it, as per the instructions. Then I freaked out and went out and bought calibration fluid just to make sure my salinity readings were accurate. When the calibration fluid was delivered, I put it to the test. The calibration fluid was almost a waste of money because it was so accurate!.
To zero it out, I just used regular tap water. Then I tested the results by putting my salt water mix or pond water on it.
The salinity in your pool can't be measured with this refractometer. At the pool store, I conducted a side-by-side comparison and found that they were not even close. The reading was 1000 ppm, but the salt level was actually 3600 ppm. It's simple to operate, but it's difficult to read and inaccurate. This item will be returned to me.
It appears to be a sound investment. Simple to work with. They include a small screwdriver for turning the calibration screw, which I appreciate. I calibrated it, and it's been perfectly accurate ever since. I've shattered a lot of glass hydrometers. I now keep one in a box (which I only use once in a while to confirm calibration). br>The only reason I docked a star is because the case could have been handled better. It works, but it appears that if you dropped it, it would break or pop open.
This Salinity Refractometer is simple to calibrate and provides immediate results, making it well worth the investment.
For my saltwater aquarium, I purchased this to replace my old swingarm hydrometer. I tested the device with calibration fluid and dialed it in, as well as cross-testing with my hydrometer. My main concern is with the construction of this refractometer. It has a plastic and cheap feel to it in the hand, with little weight. However, it does come with a hard plastic storage case, which is a plus. Because the case has foam inserts, I believe it will last a long time if properly cared for (drying, cleaning, etc. ).
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