Milwaukee MI 404 User Manual

USER MANUAL
MI 404
Free & Total Chlorine
and pH 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 nstrument. Please read it carefully
before using the meter. This instrument is in
compliance with directives.
SPECIFICATIONS:
Range 0.00 to 5.00 mg/L Cl2Cl2
Resolution 0.01 mg/L (0.00-3.50 mg/L);
0.10 mg/L (above 3.50 mg/L)
Precision ±0.04 mg/L @ 1.50 mg/L
Light Source Tungsten lamp
Light Detector Silicon Photocell and 525
nm narrow band interfere-
nce 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• Fill the cuvet with 10 mL
of unreacted sample, up to
the mark, and replace the
cap.
4• Place the cuvet into the
holder and ensure that the
notch on the cap is
positioned securely into the
groove.
5• Press ZERO and "SIP" will
blink on the display.
6• After a few seconds the display
will show "-0.0-". The meter is
now zeroed and ready for measurement.
7• Remove the cuvet.
8•
For free chlorine measurement: add 3
drops of DPD 1 indicator and 3 drops of
DPD 2 buffer to an empty cuvet.
Immediately add 10 mL of unreacted sample.
Replace the cap and swirl gently.
9• Immediately reinsert the cuvet into the
holder and ensure that the notch on the
cap is positioned securely into the
groove.
10• Press READ and "SIP" will blink during
measurement.
11• The instrument directly displays
concentration
in mg/L of free chlorine.
12• 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.
13• Reinsert the cuvet into the holder and
ensure that the notch on the cap is
positioned securely into the groove.
14• Wait for 2 minutes and 30 seconds then
press READ and "SIP" will blink during
measurement.
15• The instrument directly displays
concentration in mg/L of total chlorine.
Interferences:
• Bromine (positive error)
• Chlorine dioxide (positive error)