Tropic Marin Magnesium-/Calcium CombiTest water test
incl. 19 % VAT excl. shipping costs
Tropic Marin Magnesium-/Calcium CombiTest water test
Manufacturer: Tropic Marin
For determining the magnesium and calcium concentration
For organisms that form calcareous skeletons, such as stony corals and coralline algae, magnesium and calcium are important growth factors. Due to cellular metabolism and the use of these compounds in the skeletons of calcareous organisms, the magnesium and calcium concentrations in a marine aquarium will continue to decrease over time. For this reason, regular testing of the magnesium and calcium concentrations and the possible addition of these ions to the marine aquarium is necessary to promote the health and growth of these organisms. The magnesium (Mg) content of natural sea water is about 1280-1320 mg/l (ppm) and the calcium (Ca) content is about 400-410 mg/l (ppm) creating an Mg/Ca ratio of 3.25/1.
In a quick and simple process, the TROPIC MARIN® MAGNESIUM-CALCIUM COMBITEST makes possible the accurate determination of the magnesium and calcium concentration of the aquarium water and thereby a precise determination of the amount of magnesium and calcium that may need to be added.
|•||For a precise determination of magnesium and calcium concentrations in seawater aquaria|
|•||With only one test sample, both elements are determined in two steps|
|•||Sufficient for approximately 30 applications|
How to use:
The magnesium (Mg) content of natural sea water is about 1280-1320 mg/l (ppm) and the calcium (Ca) content is about 400-410 mg/l (ppm). Extremely high concentrations of magnesium and/or calcium can lead to precipitation causing a decrease in alkalinity and of trace elements in solution. For this reason, it is recommended to maintain concentrations of magnesium and calcium as close to natural sea water levels as possible.
The calcium concentration is determined in the first part of the testing procedure, and the magnesium concentration is determined with the same sample afterwards.
To determine the Calcium concentration:
1. Shake each reagent bottle well before every use!
2. First rinse both test vials with tap water and then, several times, with the tank water to be tested. With the 5 ml dosing syringe fill both test vials each exactly with 5 ml of tank water. Put one of the two filled test vials aside. This will be the comparison sample for later on.
3. Place one of the three yellow syringe tips on the red lettered 1ml dosing syringe. Fill the syringe with reagent from the bottle Magnesium-Calcium Test A, up to the 20 unit mark and add the entire amount to the test sample. The dosing gun is only to be put aside, as it is needed under point 9 once more later on.
4. Close the test vial with the plastic stopper and shake the solution for a short time.
5. Remove the plastic stopper and add a level measuring spoonful of Magnesium-Calcium Test B reagent from the powder vial to the analytical sample. Close the glass vial with the plastic stopper and shake the solution until the powder is dissolved. The solution turns light blue.
6. Remove the plastic stopper from the glass vial from the blue test sample. Place the second syringe tip on the 1 ml dosing syringe with black lettering, and fill the syringe with reagent from the bottle Magnesium-Calcium Test C, exactly up to the 1.0 ml marking.
One drop at a time, add Reagent C to the blue test sample slowly. Swirl the glass test vial after each drop in order to mix the liquid thoroughly. Continue to add drops of Reagent C until the light blue solution turns colorless *.
In order to recognize the color transition easily, place both the test sample and the comparison sample set aside in step 2 on a white sheet of paper and sight from above into both test vials. The test is complete as soon as the test sample can no longer be distinguished from the comparison sample.
* If the test solution becomes clear after adding the first two drops of reagent C, it is an indication of a high calcium level. To test under these conditions, follow the test instructions above, filling the sample vials with 4 ml instead of 5 ml of tank water. To determine the calcium concentration with this smaller sample volume, multiply the value for the calcium concentration, read from the table above, by 1.25 to get the actual calcium concentration of your sample.
7. After the test sample becomes colorless, read the residual amount of reagent C in the syringe. The table in the user manual shows the calcium concentration (Ca) in mg/l (ppm) which corresponds to the calcium in your test sample.
To determine the Magnesium concentration (must follow the calcium test with the same sample):
8. To determine the magnesium concentration: Add an additional 3 drops of reagent Magnesium-Calcium Test A to the test sample (using the 1 ml dosing syringe with red lettering). Close the test vial with the plastic stopper and shake it for a short time. The solution turns light blue again.
9. Place the third syringe tip on the remaining 1ml dosing syringe. Fill the syringe with exactly 1.0 ml from the Magnesium-Calcium Test D. Remove the plastic stopper from the glass vial. One drop at a time, add the test reagent D to the blue test sample slowly. Swirl the glass test vial after each drop in order to mix the liquid thoroughly. Continue to add test reagent until the light blue solution turns colorless. In order to recognize the color transition easily, place both the test sample and the comparison sample set aside in step 2 on a white sheet of paper and sight from above into both test vials. The test is complete as soon as the test sample can no longer be distinguished from the comparison sample.
10. After the test sample becomes colorless, read the remaining amount of reagent D in the syringe, reading from the bottom of the black rubber O ring on the plunger. The table in the user manual shows the magnesium concentration (Mg).
When your calcium or magnesium concentration is too low:
To increase the magnesium or calcium concentration, use TROPIC MARIN® BIO-MAGNESIUM or BIO-CALCIUM, which add the hydrogen carbonate compound of both ions in a biologically available form. The natural ionic ratio of the aquarium water remains constant.
In the case of excessive concentrations or precipitation of magnesium and/or calcium compounds, a partial water change using TROPIC MARIN® Marine Salt Mixture is recommended.
Keep out of reach of children!
CAUTION: Solution C contains 0.8 % lead compound • Harmful if swallowed • Danger of cumulative effects • May cause harm to unborn child • Keep away from combustible material • Avoid exposure – Obtain special instructions before use.
Solution D contains 2.6 % sodium hydroxide • Irritant • Irritating to eyes and the skin • In case of contact with eyes, rinse immediately with plenty of water and seek medical advice • In case of accident or if you feel unwell seek medical advice immediately (show the label where possible).
The reagents may be used for up to 12 months after opening.