JBL TestLab Handbuch Seite 41

Remedy:
Levels too high:
Aquarium:
Regular partial changes of water, filter with JBL NitratEx (for freshwater only), or JBL BioNitrat Ex.
Garden pond:
When laying out a pond, sufficient gravel should be used on the ground as a substrate for plants which consume
nitrates and bacteria which breakdown nitrates. Select more nitrate-consuming plants. Plant marshy areas with
nitrate-consuming plants (particularly in koi ponds without ground-covering material).
Levels too low:
Aquarium:
Add a dose of: JBL ProScape NPK Macroelements or JBL ProScape N Macrelements.
Instructions:
1. Repeatedly rinse both test jars with the water to be tested.
2. Use the enclosed syringe to fill each of the test jars with 10 ml of sample water.
3. Add the reagents to one of the test jars as follows:
a) 2 large measuring spoonfuls (broad end of the enclosed double-ended spoon) of reagent 1;
b) 6 drops of reagent 2, seal and shake very vigorously* for 1 minute; (powder does not dissolve completely:
for better colour comparison, hold the test jar at an angle until the remaining powder collects on the side);
c) Allow to settle until the colouring develops fully (10 minutes).
*) For 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 vessels backwards and forwards on the colour chart, with the
notched side of the block facing the scale, until the colour of the sample treated with reagent matches the
colour under the blank sample as closely as possible.
6. Read the nitrate content in the notch of the comparator block.
Note:
In the event that the colour of your test sample is darker than the colours of the chart, dilute the sample with
distilled or nitrate-free water and measure again.
Depending on the dilution, the result must be multiplied as follows to determine the actual nitrate content:
5 ml sample + 5 ml 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
Our tip for the environmentally-friendly user:
All reagents for JBL test sets are available from your retailer as reasonably-priced refill packs!
The instructions are repeated in a series of simple diagrams on the reverse of the colour chart.
Warning and safety notices
NO reagent 1:
3
Danger
H261 In contact with water releases flammable gases. H315 Causes skin irritation. H317
May cause an allergic skin reaction. H319 Causes serious eye irritation. H335 May cause
respiratory irritation. H412 Harmful to aquatic life with long lasting effects.
P101 If medical advice is needed, have product container or label at hand. P102 Keep out
of reach of children. P232 Protect from moisture. P261 Avoid breathing dust. P280 Wear
protective gloves/protective clothing/eye protection/face protection. P335+P334 Brush
off loose particles from skin. Immerse in cool water/wrap in wet bandages.
Hazard-determining component of labelling: sulphanilic acid.
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UK