© PCE Instruments
35
Eng
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10.11 Urea (PCE-CP 30)
0.
1 … 2.5 mg/l
Reagents: PCE-CP X0 Tab PL Urea N°1
!
, PCE-CP X0 Tab PL Urea N°2
!
, PCE-CP X0 Tab
Ammonia N°1
!
, PCE-CP X0 Tab Ammonia N°2
!
1.
Clean the instrument as described in chapter 2 General information and, if desired or
necessary, perform the ZERO procedure as described in chapter 7.
2.
Navigate through the main menu until the parameter
UREA
is displayed.
3.
Fill a 10 ml sample into the cuvette using the dispensing pipette.
4.
Shake the liquid reagents before use.
5.
Add two drops of PL Urea N°1 to the sample and stir it with the crushing/stirring rod.
Then press
OK
to proceed.
6.
Add one drop of PL Urea N°2 to the sample and stir it with the crushing/stirring rod.
Then press
OK
to proceed.
7.
Place the light protection cover on the cuvette and press
OK
.
8.
Open the cuvette, add a bag of Ammonia N°1 and mix the reagent with the sample.
9.
Repeat step eight with a bag of Ammonia N°2.
10. When both bags are completely dissolved, place the light protection cover on the
cuvette and press
OK
to start the measurement. After the countdown, the
measurement result is displayed.
The reagent Ammonia N° 1 only dissolves completely after you add the reagent Ammonia N° 2.
Ammonia and chloramine are detected together. The displayed result is therefore the sum of the
two. The temperature of the sample must be between 20 °C and 30 °C. The test must be
performed no later than one hour after taking the sample. When testing seawater, the sample
must be pre-treated with a special conditioning powder before adding the Ammonia N° 1 tablet.
Do not store PL Urea 1 below 10 °C. It could otherwise granulate. PL Urea 2 must be stored
between 4 °C and 8 °C.
10.12 PHMB (PCE-CP 30)
5 … 60 mg/l
Reagent: PCE-CP X0 Tab PHMB
!
1.
Clean the instrument as described in chapter 2 General information and, if desired or
necessary, perform the ZERO procedure as described in chapter 7.
2.
Navigate through the main menu until the parameter
PHMB
is displayed.
3.
Fill a 10 ml sample into the cuvette using the dispensing pipette.
4.
Then add one PHMB tablet to the sample and crush the tablet with the crushing rod.
5.
When the tablet is completely dissolved, place the light protection cover on the cuvette
and press
OK
to start the measurement.
6.
As soon as the countdown is completed, you will receive your measurement result.
It is essential that you clean the objects used for the measurement (cuvettes, cover,
crushing rods) that come into contact with the tested water mixed with reagent
thoroughly with a (soft) brush, water and then with distilled water as otherwise the
measuring equipment may turn blue over time. Alkalinity values (M) <> 120 mg/l and
calcium hardness values <> 200 mg/l can cause measurement deviations.
