38
GB
Warning and safety notices:
NH
4
reagent 2:
Danger
H314 Causes severe skin burns and eye damage. H400 Very toxic to aquatic life.
EUH206: Warning! Do not use together with other products. May release dangerous ga-
ses (chlorine).
P101 If medical advice is needed, have product container or label at hand. P102 Keep out
of reach of children. P273 Avoid release to the environment. P280 Wear protective gloves/
protective clothing/eye protection/face protection. P305+P351+P338 IF IN EYES: Rinse
cautiously with water for several minutes. Remove contact lenses, if present and easy
to do. Continue rinsing. P310 Immediately call a POISON CENTER or doctor/physician.
Hazard-determining component of labelling: sodium hydroxide.
NH
4
reagent 3:
Danger
H225 Highly ammable liquid and vapour. H315 Causes skin irritation. H319 Causes
serious eye irritation. H336 May cause drowsiness or dizziness.
P102 Keep out of reach of children. P210 Keep away from heat/sparks/open ames/hot
surfaces. – No smoking. P280 Wear protective gloves/protective clothing/eye protection/
face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off immediately all
contaminated clothing. Rinse skin with water/shower. P304+P340 IF INHALED: Remove
victim to fresh air and keep at rest in a position comfortable for breathing. P403+P233
Store in a well-ventilated place. Keep container tightly closed.
Nitrite Test Set (NO
2
)
Special features:
The JBL nitrite test set NO
2
is for the measurement and routine control of the nitrite content in freshwater and
marine aquariums as well as in garden ponds within the range 0.025-1.0 mg/litre (ppm). Using the compensation
method specially developed by JBL, precise and reliable results can be obtained even in moderately discoloured
water, e.g. as a result of peat lters and disease treatment.
Why test?
The following applies to freshwater and saltwater as well as to garden ponds: The process involved in the
breakdown or the mineralization of organic matter in the water (feed and plant debris, sh excrement) follows
the stages protein - ammonium - nitrite - nitrate.
Certain bacteria are responsible for this process. Measuring the intermediate stages ammonium, nitrite and
nitrate allows certain conclusions to be made about the “function” of the system “aquarium” or the system
“pond”. Normally, ammonium and nitrite should not be allowed to enrich concentrations of above 0.2 mg/l
(ppm). If they do, the bacterial balance may be disturbed. Many of the medications used to treat sh diseases
can damage benecial cleansing bacteria, leading to an increase in nitrite levels. As a rule, nitrite is not found
in measurable amounts in a well-maintained aquarium with an efcient biological lter or in a correctly planted
garden pond. Like ammonia, nitrite is highly toxic for sh; depending on the sensitivity of the sh species,
concentrations between 0.5 and 1 mg/l (ppm) may be lethal. In general, marine sh and young sh tend to be
more sensitive than adult sh.
Points to consider for garden ponds:
When temperatures drop in the Central European autumn and winter, it is particularly important to bear in mind
that the activity of the cleansing bacteria will decline as well. If unsuitable “winter food” with an excessively high
protein content is fed at this time, a dangerous increase in nitrite may occur, as the waste products from the
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