PRODACtest GH - Total Hardness
Water test for determining the total hardness (GH - permanent hardness) - suitable for freshwater and saltwater aquariums
Total hardness test set Instructions for use
- Rinse the cuvette several times with the water to be tested and then fill up with exactly 5 ml of water *.
- Add the reagent drop by drop, shaking the sample after each drop. Please do not forget to count the drops count the drops! Add more drops until the mixture changes colour from red to green
- As soon as the green colour is reached, leave the cuvette to rest for approx. 30 seconds; if the colour disappears, add more drops of reagent until the colour remains stable
- The total hardness in ° dGH corresponds to the number of drops of reagent required to achieve the green colour. 1 drop corresponds to 1° dGH
- The sensitivity of the test can be increased by doubling the sample size to e.g. 10 ml. Then each drop of the test solution corresponds to 0.5° dGH
* The meniscus of the water surface must touch the 5 ml graduation mark exactly
Caution
Clean the cuvette after use, close the reagent bottle tightly and store in a cool, dry place away from light
Keep out of reach of children!
Contents
12 ml reagent solution, glass vial with stopper
Possible dangers
Pictograms
Signal word: Caution
Hazard statements
H226 Flammable liquid and vapour.
Precautionary statements
P102 Keep out of the reach of children.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. Do not smoke.
P233 Keep container tightly closed.
P403 + P235 Keep in a well-ventilated place. Keep cool.
P501 Dispose of contents/container in accordance with all local/national/international regulations.
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