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Your cart is empty.Our Marine Magnesium Checker HC (HI783) is designed to accurately and quickly determine the magnesium level in marine (saltwater) samples. The digital readout makes measurements effortless. Our Magnesium Checker HC (HI783) is the first marine magnesium test of its kind! This Checker provides an uncomplicated, accurate, and budget-friendly way to measure magnesium in saltwater/marine environments. Color-coded syringes and straightforward testing steps ensure quick and easy measurements every time! Magnesium is vital in saltwater environments as it allows calcium and carbonate to be bioavailable for corals and invertebrates. Designed as a more accurate alternative to chemical test kits, our Marine Magnesium Checker HC (HI783) provides quick, accurate results in a few easy steps. Magnesium Checker Tips & Tricks for Accurate Measurements Measure liquids accurately by syringe by drawing up the plunger until the bottom seal of the plunger is at the desired volume mark. Do NOT raise the liquid to the mark as this will give a false high volume. An air gap between the plunger and liquid is normal. Always use clean, dry cuvettes and syringes/tips. Rinse with deionized (RODI) water only; never rinse with tank water. Dry the cuvettes before use to prevent dilution. Ensure the sample does not contain any debris. Whenever the cuvette is placed into the checker, it must be dry outside and free of fingerprints, oil and dirt. Wipe the cuvette thoroughly with HI731318 microfiber cleaning cloth or a lint-free cloth prior to insertion. Shaking the cuvette can generate bubbles, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the cuvette. Do not let the reacted sample stand too long after reagent has been added, as accuracy will be affected. Discard the sample immediately after the readng has been taken or the glass might become permanently stained. Keep the tips with their appropriate syringes during measurement.
Elizabeth
2025-07-23 10:43:48
Easy to use, consistent and accurate against ICP tests
steve
2025-07-18 16:19:20
Works great and gives accurate reading.
Johnny Anderson
2025-07-11 13:19:57
This is one of the worse products I have purchased. Several issues of concern identified here. 1. Highly inaccurate. I ran more than 20 test and on the 21st test I was able to receive a reading of less than 1800. sample used for the test were 220 gallon SPS tank, 20 gallon, trident calibration solution all with know values. 2. the syringe attachments do not stay in place on the tips. causing inaccurate draws of solution from the reagents which causes an inaccurate final reading. This is by far the worse kit I've used and that is due to high expectation i've held for Hanna and their products. Is it possible to be refunded, this was a waste of money.
Miguel
2025-05-31 15:53:19
It is quick ,it gives you a number, not a colorimeter
Joseph williams
2025-04-29 21:09:00
Very good works the way it should
Adam Lebow
2025-03-19 16:43:10
Easy to use and helped get my tank under control. My corals have done much better.
Mignelis L.
2025-02-14 18:13:34
This is probably the easiest way to test for magnesium in a reef tank
Blake
2025-01-25 13:58:48
The test is very easy to mess up, I never got accurate results (always hit the max of 1800) overall the idea is there and nice for a quick test if it’s accurate the first time. Other Hanna testers are good but not this one unfortunately
Brad k
2025-01-18 16:02:20
Love being able to take 5 minutes out of my day to do the test. One tip, set a 30 second timer or the last step and shake vigorously. Then pop into the egg and hold the button till the 3 min counter starts. After 1 min is left open the egg and pull the glass vial out and tilt back n forth to dislodge any bubbles on the glass then pop it back in before the timer ends. That way you'll get a very very close reading if not a perfect reading. This is the new revision and works extremely well..
Albano Israel Pineda Padron
2024-12-31 10:13:06
ahora si da los parametros correctos y se actualizo el firmeware con un contador de 3 minutos para determinar el valor de magnesio
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