UK
Warning and safety notices with respect to reagent 1:
Contains sufanilic acid
Warning notices:
Irritating to eyes, respiratory system and skin
May cause sensitisation by skin contact
Contact with water liberates extremely
fl
ammable gases
Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety notices:
Keep out of the reach of children
Avoid contact with skin and eyes
Wear suitable gloves
In case of
fi
re use dry powder extinguishing agent , never use water
If swallowed, seek medical advice immediately and show this container or label
Avoid release to the environment. Refer to special instructions/safety data sheet.
Reagent 2:
Warning notices:
Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety notices:
Keep out of the reach of children
After contact with skin, wash immediately with plenty of water
Avoid release to the environment. Refer to special instructions/safety data sheet.
In case of accident or if you feel unwell seek medical advice immediately (show the label where
possible)
Contains m-phenylenediamine dihydrochloride, may cause allergic reactions
Our tip for the ecologically-minded users
All reagents for the JBL Test Sets are available from your retailer in convenient and reasonably
priced re
fi
ll packs.
CO
2
:
For aquatic plants, CO
2
is the most important nutrient in a freshwater aquarium. Unsatisfactory
plant growth is usually caused by a lack of CO
2
in the aquarium. An adequate supply of CO
2
provides at the same time a favourable pH level of about 7. As the levels of CO
2
, pH and carbo-
nate hardness (KH) are directly related, the measurements of pH value and carbonate hardness
(KH) can be used to establish the associated CO
2
level from a table.
Remedies for unfavourable values:
CO
2
level too low: CO
2
fertilization with JBL PROFLORA CO
2
system
CO
2
level too high: Brie
fl
y agitate or aerate the water, check and adjust setting of CO
2
fertilization
Determining the CO
2
level in freshwater using the pH value and the carbonate hardness:
If no substances which reduce the pH value (nitrate, peat etc.) are present in the water, the CO
2
level can be calculated from the pH level and the carbonate hardness (KH). First measure the
pH level and the carbonate hardness (KH). Using the enclosed table,
fi
nd the line or column
with the carbonate hardness or pH value measured. The point at which the lines or columns
intersect gives the value of the CO
2
level.
