Warnings:
Hazard statements H226
Precautionary statements P102 P210
KH/Alkalinity Test Professional
Product description:
For very precise determination of carbonate hardness
The carbonate hardness (KH) or alkalinity of a water sample characterizes its buffering capacity, i.e., its ability to maintain the water's pH value. In water chemistry, several terms, each with its own definition, exist to describe buffering capacity. In aquaristics, the term "carbonate hardness" is commonly used; however, alkalinity is measured. In this test, both terms are used interchangeably. Carbonate hardness is usually expressed in degrees German hardness (°dH).
The carbonate hardness should be checked regularly in all aquariums. If the alkalinity in the aquarium is too low, it can lead to a drop in the pH value (acidity drop), which is life-threatening for many fish and invertebrates. In reef aquariums, sufficient carbonate hardness is essential for vigorous coral growth. On the other hand, excessive carbonate hardness in saltwater tanks can lead to limescale precipitation and also negatively impact coral growth. In saltwater aquariums, the carbonate hardness should be between 6 and 9 °dH. In freshwater aquariums, the carbonate hardness should not fall below 3 °dH.
The Tropic Marin® KH/Alkalinity Test Professional Allows you to determine the carbonate hardness of your aquarium water with an accuracy of 0.1 °dH via titration. The easily recognizable color change occurs from turquoise blue to pink.
The advantages at a glance:
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Measuring range: 0.1 - 20 °dH
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Resolution (accuracy): 0.1 °dH
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for the highly precise determination of carbonate hardness/alkalinity in the aquarium
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Measurement in °dH (conversion table for other units included in the instructions for use)
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sufficient for approximately 100 applications at 0.2 °dH resolution or 50 tests at 0.1 °dH resolution (and at a KH of 10 °dH)
Recommended use:
- Shake the dropper bottles before use!
- Rinse the glass cuvette with tap water and then several times with aquarium water.
- Using the dosing syringe, fill exactly 5 ml of aquarium water into the glass cuvette.
- Afterward 3 drops of reagent A (indicator) and gently swirl the cuvette. The water sample turns turquoise blue.
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Attach the enclosed syringe attachment to the small syringe and 1 ml Reagent B (Titrator) raise.
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Well Reagent B Add drop by drop from the syringe to the water sample until the color changes from turquoise blue to dark blue and violet to a clear pink. Gently swirl the cuvette after each drop. The measurement is complete when the sample color reaches a clear pink without a bluish tinge.
- The consumption of Reagent B (Difference to 1 ml) multiplied by 10 gives the carbonate hardness in °dH.
Example: If the lower end of the syringe plunger is at 0.28 ml after the end of the titration, the amount of Reagent B used is 0.72 ml (difference to 1 ml). 0.72 x 10 = 7.2. The carbonate hardness of the aquarium water is 7.2 °dH. For a longer range of the test reagents or for hard water above 10 °dH, the test can be performed with 2.5 ml of sample. Proceed as described above and, after the end of the titration, multiply the amount of Reagent B used by 20.
- After the measurement, rinse the glass cuvette and syringe thoroughly with tap water.
Safety instructions
DANGER
Flammable liquid and vapor. Keep away from heat/sparks/open flames/hot surfaces. No smoking. Keep out of reach of children.
durability
The reagents are stable for 6 months after opening. Store in a cool, dark place.
