JBL TESTLAB Bedienungsanleitung Seite 15

Features
The JBL TH Test Set is an easy to use quick-test for determining the total freshwater
hardness.
Total hardness (GH):
Why test?
Depending on origin and consistency of the subsoil, water may contain varying
Features
quantities of alkaline earth salts, usually in the form of calcium and magnesium salts.
The JBL TH Test Set is an easy to use quick-test for determining the total freshwater hardness.
Total hardness, by definition, is the sum of calcium and magnesium ions suspended
in the water. Most fish and plants thrive well at a total hardness of between roughly 8
Why test?
and 20°d. Excessive total hardness values, should, however, be combated by taking
Depending on origin and consistency of the subsoil, water may contain varying quantities of
appropriate measures. The fish and plants in European waters are well-adapted to
alkaline earth salts, usually in the form of calcium and magnesium salts. Total hardness, by
the conditions found there. Total hardness is therefore not a significant issue for
definition, is the sum of calcium and magnesium ions suspended in the water. Most fish and
garden ponds.
plants thrive well at a total hardness of between roughly 8 and 20°d. Excessive total hardness
values, should, however, be combated by taking appropriate measures. The fish and plants in
What to do in the event of
European waters are well-adapted to the conditions found there. Total hardness is therefore not
excessive total water hardness in an aquarium:
a significant issue for garden ponds.
There are various methods for reducing water hardness (e.g. by using a reverse
osmosis system such as JBL Osmose 120). Ask your pet shop specialist for details.
What to do in the event of
excessive total water hardness in an aquarium:
too low total water hardness: use JBL AquaDur plus
There are various methods for reducing water hardness (e.g. by using a reverse osmosis
system such as JBL Osmose 120). Ask your pet shop specialist for details.
Instructions
too low total water hardness: use JBL AquaDur plus
1. Repeatedly rinse the test cup with the water to be tested.
2. Fill the test cup with the water to be tested up to the 5 ml mark
Instructions
1. Repeatedly rinse the test cup with the water to be tested. (CAUTION: the lower line of the water level must coincide with the marking).
2. Fill the test cup with the water to be tested up to the 5 ml mark
3. Add reagent one drop at a time, counting the drops, and agitate after each drop
(CAUTION: the lower line of the water level must coincide with the marking).
until the colour changes from red to green.
3. Add reagent one drop at a time, counting the drops, and agitate after each drop until the
4. One drop of reagent solution used corresponds to 1° total hardness (German
colour changes from red to green.
scale).
4. One drop of reagent solution used corresponds to 1° total hardness (German scale).
See table below for conversion into other commonly accepted units of measurement.
See table below for conversion into other commonly accepted units of measurement.
Total Alkaline
earth ions
hardness
mmol/l
TH
Alkaline earth
ions mmol/l
Alkaline earth 0.50
ions mval/l
German 0.18
degree °d
ppm CaCO 0.01
3
Engl.degree °e 0.14
French degree 0.10
°f
Warning and safety notices:
Warning notices
Irritating to eyes
Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Flammable
Safety notices:
Keep out of the reach of children
Avoid contact with eyes
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
Avoid release to the environment. Refer to special instructions/safety data sheet.
Our tip for ecologically-minded users
All reagents for the JBL Test Sets are also available from your retailer as reasonably priced refills.
Conversion table for units of water hardness
Alkaline
earth ions
mval/l
- 2.00
-
0.375
0.020
0.285
0.200
German ppm
degree °d CaCO
5.00 100.00
2.80 50.00
- 17.80
0.056 -
0.798 14.30
0.560 10.00
Engl.
degree °e degree °f
3
7.02
3.51
1.25
0.0702
-
0.702
UK
French
10.00
5.00
1.78
0.10
1.43
-