Product: Salifert Profi Test Strontium - for about 25 measurement with an intervals of approx. 5ppm
Salifert was the first to offer a test for strontium. This is the third edition and has been improved.
Color changes are more sharply, the number of stages of the procedure was reduced, accuracy and precision were obviously increased.
The Strontium, however, remains difficult to measure because, in many respects, it resembles calcium and is present in concentrations much lower than it.
You can understand this difficulty thinking of having 10 balls look a bit 'less white between 800 white marbles.
Strontium is a very important and allows the growth of many calcareous algae and corals.
Strontium is, after football el'alcalinità the main constituent element of the skeleton of corals.
The sea water contains approx. 7-9 mg/l (= ppm) of strontium. In aquarium values between 10 -15 mg/l are excellent.
It's possible to measure the strontium once or twice a month, depending on the growth of corals (directly proportional to the consumption of strontium).
Calcium is present in the sea in a concentration of about. 400-450 mg/l.
The alkalinity should be about 8 dKH.
Strontium has a very important role nell'accellerare the growth of corals and calcareous algae
The seawater naturally contains about 7 / 9 mg / l of strontium. The growth of corals and calcareous algae occurs in parallel with the depletion of strontium and calcium. The lowering of calcium levels always implies that the concentration of strontium.
It's recommended to keep in your reef aquarium the concentration of strontium including frai 5 and 20 mg / l.
The measurement of the concentration of strontium is necessary but unfortunately it is quite difficult to carry out a test, for this reason many aquarists do not run as often as necessary.
For this reason particular strontium-based additives should be investigated so as to avoid in the tank too high or low concentrations of strontium. Using additives suitable measurements of the concentration of this substance can be reduced.
Addition, the seawater contains strontium sulfate associated with, in this form does not have the toxicity of strontium chloride, normally used. Then use sulfur-based additives to avoid an imbalance of strontium ion.
Using the wrong syringe can cause harm to the reactants and lead to inaccurate results.
The tables contained in these instructions may vary from batch to batch. Then use only the statements contained in this particular test. The additive Salifert Natural Iodine which contains both iodine iodine. Other brands only contain iodine, some too and iodine molecules. There are some additives that contain complex organic forms of iodine that can not be detected with this test.
After use, rinse the container of the test several times with hot water. If any substance should remain on the walls of the container fill it with vinegar. After a few minutes rinsed several times with water.
Wash the measuring cup with water and dry with a cloth.
Empty syringes after use.
The remaining reagents can be reused (not replace them in the bottles wrong!).
Do not rinse never syringes with water.
- Fill the container to the test with 5 ml of water (use 5 ml syringe)
- Add 10 drops of SR-1 and shake gently for ca.10 seconds.
- Add one level measuring spoon of Sr-2, shaken gently for 5 seconds. The color at this point, it should be red / pink.
- Put the small bit of plastic on the 1 ml syringe without the red label. Sure that the tip is inserted firmly. Fill this syringe with 1ml of Sr-3 (the lower edge of the black plastic of the piston is positioned on 1.ml)
- Dose this amount in the test container and shake gently for 20 seconds. If the color has turned to blue, and remains so even after another 30 seconds, signiffica that the concentration of calcium is too low (approx. 300 mg / L or less) and must be corrected before doing the test for strontium.
- Refill the syringe with 1 ml of Sr-3. Add this quantity, drop by drop, the container of the test.
- After each drop gently agitated for a few seconds, until the color does not become blue. If the color is blue, shake gently for 15 seconds. It's very likely that the color fades and is no longer blue. In this case, add one drop of Sr-3 and stir again for another 15 seconds. Repeat this operation does not stay long as the color blue.
- Hold the syringe with the plastic tip facing upward. Read on the syringe, the value corresponding to the location of the upper part of the plastic plunger. Try this value in the table of football to get the calcium concentration
- Fill the syringe of 1 ml with red label (not needed any point and is not provided) with 0.5 ml of Sr-4 (the lower edge of the black plastic of the piston will be positioned to 0.5 ml). Add this amount of reagent to the test container and shake gently for 10 seconds. The color will now be red / pink
- Add two scoops of shaved Sr-5 As long slowly and stir the powder has dissolved. Let stand for 12-15 minutes (use a clock)
- Fill the syringe 1 ml, without the red label and the plastic tip, with 1 ml of Sr-3. Add the liquid drop by drop to the container of the test. Agitate gently for 20 seconds (not less than 20 seconds!) After each drop, until the color turns blue no.
- Hold the syringe with the plastic tip facing upward. Read on the syringe, the value corresponding to the location of the upper part of the plastic plunger. Try this value in the table to obtain the strontium concentration of strontium
The error in the detection of strontium is approx. + / - 5 mg / l.
The error in the measurement of calcium is approx. 2%