USER MANUAL
MI 413
Free & Total Chlorine
High Range Meter
Dear Customer,
Thank you for choosing a Martini product. This
manual will provide you with the necessary
information for the correct use of the instrument.
Please read it carefully before using the meter.
This instrument is in compliance with
directives.
SPECIFICATIONS:
Range
0.00 to 10.00 mg/L Cl2
Resolution
0.01 mg/L (0.00-3.50
mg/L);0.10 mg/L (above
3.50 mg/L)
Precision
±0.10 mg/L @ 5.00 mg/L
Light Source
Tungsten lamp
Light
Detector
Silicon Photocell and 525
nm narrow band
interference filter
Method
Adaptation of the USEPA
method 330.5 and
Standard Method 4500-
Cl G.
Environment
0 to 50°C (32 to 122°F);
100% RH max.
Battery Type
1 x 9 volt
Auto-Shut off
After 10' of non-use
Dimensions
192 x 104 x 52 mm
(7.5 x 4.1 x 2”)
Weight
380 g
MEASUREMENT PROCEDURE:
1• Turn the meter on by pressing
ON/OFF.
2• When the LCD displays “- - -”, the
meter is ready.
3•
Add 5 mL of DPD 0
reagent by using a
syringe.
4•
Fill the cuvet up to the
10 mL mark with 5 mL
of unreacted sample
using a pipette.
5•
Replace the cap and
shake gently for a few
seconds.
6•
Reinsert the cuvet into
the holder and ensure
that the notch on the
cap is positioned
securely into the
groove.
7• Press ZERO and “SIP” will blink on the
display.
8• After a few seconds the display will
show “-0.0-”. The meter is now zeroed
and ready for measurement.
9•
Remove the cuvet. Open it.
10•
For free chlorine measurement
:
Add 3 drops of DPD 1 reagent.
Replace the cap and swirl gently.
11• Immediately insert the cuvet into the
holder and ensure that the notch on
the cap is positioned securely into the
groove.
12• Press READ and “SIP”
will blink
during
measurement.
13• The instrument directly
displays concentration in
mg/L of chlorine.
14• Then,
for total chlorine measurement
,
remove the cuvet and add to the
reacted sample 3 drops of DPD 3.
Replace the cap and swirl gently.
15• Reinsert the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
16• Wait for 2 minutes and 30 seconds
then press
READ and
“SIP” will blink
during
measurement.
17• The instrument directly displays
concentration
in mg/L of total
chlorine.
Interferences
•
Bromine (positive error)
•
Chlorine dioxide (positive error)
•
Iodine (positive error)
•
Oxidized Manganese and Chromium
(positive error)
•
Ozone (positive error)
•
Alkalinity above 250 mg/L CaCO3 or
acidity above 150 mg/L CaCO3 will not
reliable develop the full amount of
color or it may rapidly fade. To resolve
this, neutralize the sample with diluted
HCl or NaOH.
