JBL TestLab Handbuch Seite 38

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 5 ml of sample water.
3. Add the reagents to one of the test jars in the following sequence:
a) 4 drops of reagent 1, mix well!
b) 4 drops of reagent 2, mix
c) 5 drops of reagent 3, mix. Allow to settle for 15 minutes.
4. Place both test jars into the comparator block: the jar with added reagent into the smooth end of the compara-
tor block, the jar with untreated test water (blank sample) into the notched end of the comparator block.
5. Move the comparator block together with the jars 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 ammonium 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 ammonium-free water and measure again.
Depending on the dilution, the result must be multiplied as follows to determine the actual ammonium content:
2.5 ml sample + 2.5ml dist. water: result x 2
1 ml sample + 4 ml dist. water: result x 5
0.5 ml sample + 4.5ml 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!
Warning and safety notices:
NH reagent 2:
4
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 reagent 3:
4
Danger
H225 Highly flammable 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 flames/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.
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