JBL TESTLAB Bedienungsanleitung Seite 23

*) At Item b) if the mixture is not shaken long enough or vigorously enough, the test
results may be too low.
4. Place both test jars into the comparator block: the jar with added reagent into the smooth end
of the comparator block, the jar with the untreated test water (blank sample) into the notched
end of the comparator block.
5. Move the comparator block together with the jars from side to side over the colour chart,
with the notched side of the block facing the scale, until the colour of the sample with added
reagent matches the colour of the blank sample.
6. Read the nitrate content in the notch of the comparator block.
Note:
If the colour of the tested sample is darker than the colours of the scale, dilute the sample with
distilled or nitrate-free water and repeat the test.
Depending on the dilution, the actual nitrate level can be calculated by multiplying the result
as follows:
5 ml sample + 5ml dist. water: result x 2
2 ml sample + 8 ml dist. water: result x 5
1 ml sample + 9 ml dist. water: result x 10
See the JBL brochure "What, Why, How" No. 2 for more details on the significance of the nitrogen
system (ammonium-nitrite-nitrate) in an aquarium, or JBL brochure No. 8 for garden ponds.
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 flammable 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 fire 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 refill packs.
UK