JBL TestLab Handbuch Seite 50

Instructions for use of the CO
1. Rinse both measuring tubes with the tank water several times.
2. Rinse the syringe with the water which is to be tested.
3. Use the enclosed syringe to fill the measuring tubes with 20 ml of tank water. Make sure that no bubbles
form when the sample water is added.
4. Place the measuring tubes on the two circles of the enclosed colour chart.
5a. Add 5 drops of Reagent 1 to the measuring tube which is on the white circle and shake gently.
5b. Then add Reagent 2 drop by drop to the measuring tube, shaking the tube gently after every drop. Count
the drops until the water turns a pink colour which corresponds to the measuring tube on the other coloured
circle. Look into the measuring tubes from above when comparing the colours.
5c. Add the drops of Reagent 2 drop by drop until the colour remains stable for at least 60 seconds.
6. Every drop corresponds to 2 mg/l of carbon dioxide in the water. The number of drops x 2 equals the carbon
dioxide concentration in mg/l.
As other acids in the tank water also interfere with the measurement, the blank value must be subtracted from
the measured value to obtain an accurate value. The blank value can be determined by taking a water sample
of 100 ml of tank water and aerating it with a JBL ProSilent diaphragm pump with an air stone for 15 minutes.
Then measure the blank value in accordance with the above-mentioned instructions.
Result 1 – blank value = actual carbon dioxide concentration in mg/l.
Please observe the safety instructions !
You will also find easy-to-follow pictographic instructions on the reverse side of the colour chart.
Our tip for ecologically minded users:
All reagents for the JBL Test Sets are commercially available as reasonably priced refills!
Warning and safety notices reagent 1:
Danger
Highly flammable liquid and vapour. Keep out of reach of children. Keep away from
heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Keep
container tightly closed. Wear protective gloves/protective clothing/eye protection/face
protection. Store in a well-ventilated place. Keep cool.
Warning and safety notices reagent 2:
Danger
Causes severe skin burns and eye damage. If medical advice is needed, have product
container or label at hand. Keep out of reach of children. Wear protective gloves/
protective clothing/eye protection/face protection. IF ON SKIN (or hair): Remove/Take off
immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse
cautiously with water for several minutes. Remove contact lenses, if present and easy to
do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.
Copper Test Set Cu
Special features:
The JBL copper test set Cu is for the measurement and routine inspection of the copper content in saltwater
and freshwater aquariums, in the garden pond and in mains water within the range of 0.1 – 1.6 mg/l (ppm). Using
the compensation method specially developed by JBL, precise and reliable results can be obtained even in
moderately discoloured water, caused for instance by peat filters and disease treatment.
Why test?
Copper is a heavy metal. On the one hand it is essential as a trace element for plant and animal organisms,
on the other hand excess concentrations act as a toxin to cells, with disastrous results. Levels as low as 0.03
mg/l cause long-term damage to filter bacteria. Algae show signs of harm, depending on the type, with 0.1 – 10
mg/l of copper.
Test Set direct in fresh water:
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UK