How to Set Up the Aqua Medic Refractometer

Daniel8015

The point is that my favorite and VERY CURIOUS CHILD got in with a screwdriver and messed up the settings... Can you advise HOW TO ADJUST the device for tap water with a visible 1.000 SG and zero PPT? Or how? In general, I'm waiting for practical advice!

Michelle104

Do you remember the latest water parameters in the aquarium? You can adjust based on them, but there are calibration solutions for this... If the scale starts from zero, then use distilled water, but this is less accurate than using calibration solutions.

Bonnie

You can calibrate the refractometer using the following solution: dissolve 36.5 grams of table (fine) salt in water and bring the solution to 1 liter. This will yield a salinity of 35%.

James5103

Are you not confusing anything?... I'm not into marine aquariums, but from a chemical point of view, you need to take 3.65 g of salt and 96.35 ml of water (at room temperature) to get a 3.65% solution or 36.5 ‰ (per mille). Where do your 1.5% go?

Susan

The thing is that sea salt contains not only sodium chloride but also other salts. The specified amount of table salt simply replaces sea salt.

Larry9400

Now I understand, thank you!

Anne4851

Preparing a calibration solution from table salt is not entirely correct. It is better to buy a calibration solution or ask at a pharmacy that makes custom medications. At home, set the distillate to "0" and go ahead. The error will be minimal.

Breanna9982

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