ProMinent DULCOTEST DT1B Operating Manual page 37

Measuring tolerances
when determining
chlorine HR:
± 5 mg/l
–
Oxidising agents
lead to multiple
results
All the oxidising
agents contained in
the water sample
react like chlorine
which leads to mul‐
tiple findings.
Ensure, by using suit‐
able methods and
measures that for
your particular
process, such mul‐
tiple finding cannot
occur or that such
multiple findings can
be allowed for in
another manner.
Bromine with tablet 0.02 ... 13 mg/l
[MODE] key to select [Br] .
Use the
1. In a 24 mm cuvette add a 10 ml
water sample and carry out a
zero correction, see
Ä „Switching on and zero cor‐
rection" on page 13
2. Remove the cuvette from the
sample chamber and empty the
cuvette down to the last few
drops
[DPD No. 1] tablet and a
3. Enter a
[DPD No. 3] tablet directly from
the foil into the water sample
and crush the tablet with a stir‐
ring rod
4. Fill the cuvette up to the 10 ml
marking with the water sample
5. Use the cuvette lid to seal the
cuvette
6. Mix the contents of the cuvette
by tipping it back and forth, until
the tablet has dissolved
7. Position the cuvette in the
sample chamber
ð Observe the correct posi‐
tioning of the cuvette.
8. Switch the countdown on, see
Ä „ Switching the countdown
function on" on page 14 . To do
[!] and [ZERO/TEST] .
this, press
[ZERO/TEST]
9. Press
[METHOD] flashes for
ð
approximately 3 seconds.
Analysis methods
37