CL500-en-GB_V1.2 8/15
3
Getting
Started
Equipment
Required
A
chlorine
test
requires
a
10ml
sample
bottle,
reagent
powder
for
testing
Free
and
Total
chlorine,
and
the
CL500
meter.
Measurement
Procedure
Calibration
considerations
1.
Ensure
that
the
meter
has
been
calibrated
prior
to
use.
2.
Refer
to
the
calibration
section
for
this
procedure.
Test
sample
“Zero”
measurement
Note:
Prior
to
testing,
set
the
meter
mode
to
FREE
or
TOTAL
based
on
the
desired
test
method.
See
Mode
Selection.
1.
The
meter
should
be
in
the
OFF
position.
2.
Place
the
test
sample
into
the
sample
bottle
up
to
the
10mL
line
(minimum).
Place
the
cap
on
the
bottle
and
tighten.
3.
Clean
and
dry
the
outside
of
the
sample
bottle
to
ensure
a
clean
surface.
4.
Open
the
cover
of
the
test
chamber
and
insert
the
bottle
completely
into
the
chamber.
5.
Line
up
the
white
mark
on
the
bottle
with
the
white
mark
of
the
test
chamber.
6.
Close
the
cover
and
lock
it
in
place.
7.
Press
the
“POWER”
button
to
turn
the
meter
ON.
The
display
will
show
‘Free’
or
‘Total’
for
1
second
and
then
‘CAL0’.
The
meter
is
now
ready
for
the
“zero”
test.
8.
Press
the
“Zero”
button,
the
display
will
flash
“tEST”
and
then
“0.00”ppm.
The
Zero
Test
is
now
complete.
Do
not
power
down
the
meter.
Measurement
of
Test
Solution
1.
Open
the
test
chamber
and
remove
the
test
bottle.
2.
Add
the
required
DPD
powder
(Free
or
Total)
into
the
sample
and
then
shake
for
20
seconds
until
combined.
Place
the
cap
on
the
bottle
and
tighten.
For
the
Free
Chlorine
test,
use
the
Free
Chlorine
DPD
powder
For
the
Total
Chlorine
test,
use
the
Total
Chlorine
DPD
powder
3.
Clean
and
dry
the
outside
of
the
sample
bottle
to
ensure
a
clean
surface.
4.
Wait
2
minute
before
placing
the
test
bottle
into
the
meter
to
allow
time
for
the
solution
to
mix
thoroughly.
5.
Open
the
cover
of
the
test
chamber
and
insert
the
bottle
completely
into
the
chamber.
6.
Line
up
the
white
mark
on
the
bottle
with
the
white
mark
of
the
test
chamber.
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