Hanna Instruments HI 93746 - Manual (Page 2)

MEASUREMENT PROCEDURE
• Turn the meter on by pressing ON/OFF.
• When the LCD displays
"- - -", it is ready.
• Fill one graduated mixing
cylinder up to the 25 mL
mark with deionized water.
• Add the content of one packet of HI 93746-0 reagent,
close the cylinder and shake well for 30 seconds. This is
the blank.
• Fill a cuvet with 10 mL of
the blank up to 1.5 cm (¾")
below the rim and replace
the cap.
• Place the cuvet into the holder
and ensure that the notch on
the cap is positioned securely
into the groove.
• Press ZERO and "SIP" will appear on the display.
• Wait for a few seconds and
the display will show "-0.0-".
Now the meter is zeroed and
ready for measurement.
ON
OFF
12
3
6
9
30"
ZERO
• Fill one graduated mixing
cylinder up to the 25 mL mark
with the sample.
• Add the content of one packet of HI 93746-0 reagent,
close the cylinder and shake well for 30 seconds.
• Fill a cuvet with 10 mL of the
reacted sample up to 1.5 cm
(¾") below the rim and replace
the cap. This is the sample.
• Insert the sample into the
instrument.
• Press READ TIMED and the display will show the countdown
prior to the measurement, or, alternatively wait for 30
seconds and press READ DIRECT. In both cases "SIP" will
appear during measurement.
• The instrument directly displays concentration in µg/L of
iron on the Liquid Crystal Display.
INTERFERENCES
Cadmium above 4.0 mg/L
Chromium 3+ above 0.25 mg/L
Chromium 6+ above 1.2 mg/L Cobalt above 0.05 mg/L
Copper above 0.6 mg/L Cyanide above 2.8 mg/L
Manganese above 50.0 mg/L Mercury above 0.4 mg/L
Molybdenum above 4.0 mg/L Nickel above 1.0 mg/L
Nitrite ion above 0.8 mg/L
READ
TIMED
The instruction listed below should be carefully followed
during testing to ensure best accuracy.
• Do not touch the cuvet walls with hands.
• In order to maintain the same conditions during the
zeroing and the measuring phases, it is necessary to
close the cuvet to prevent any contamination.
• Do not let the test sample stand too long after reagent
is added or accuracy will be lost.
• Whenever the cuvet is placed into the measurement cell,
it must be completely free of fingerprints, oil or dirt.
Wipe it thoroughly with HI 731318 or a lint-free cloth
prior to insertion.
• It is important that the sample does not contain any
debris. This would corrupt the readings.
• It is possible to take multiple readings in a row, but it
is recommended that a zero reading be taken for each
sample and that the same cuvet is used for zeroing and
measurement.
• It is important to discard the sample immediately after
the reading is taken because the glass might become
permanently stained.
• Shaking the cuvet can generate bubbles in the sample,
causing higher readings. To obtain accurate measure-
ments, remove such bubbles by swirling or by gently
tapping the vial.
• All the reaction times reported in this manual are re-
ferred to 20°C (68°F). As a general rule of thumb, they
should be doubled at 10°C (50°F) and halved at 30°C
(86°F).
Battery replacement must only take
place in a non-hazardous area
using a 9V alkaline battery.
Simply slide off the battery cover
on the back of the meter. Detach
the battery from the terminals and
attach a fresh 9V battery while
paying attention to the correct
polarity. Replace the battery and
the cover.
Recommendations for Users
Before using these products, make sure that they are entirely suitable for
the environment in which they are used.
Operation of these instruments in residential area could cause unacceptable
interferences to radio and TV equipments, requiring the operator to take all
necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may
degrade the instruments' EMC performance.
To avoid damages or burns, do not perform any measurement in microwave
ovens
.
REAGENT SETS
HI 93746-01 Reagents for Iron LR (100 packets)
HI 93746-03 Reagents for Iron LR (300 packets)
OTHER ACCESSORIES
HI 710009 Blue rubber boot
HI 710010 Orange rubber boot
HI 721310 9V battery (10 pcs)
HI 731318 Tissue for wiping cuvets (4 pcs)
HI 731321 Glass cuvets (4 pcs)
HI 731325 Caps for cuvets (4 pcs)
HI 93703-50 Cuvets cleaning solution (230 mL).
Operational Guide
Tips for an Accurate Measurement
Battery Replacement
9V
SLIDE
OFF
Accessories
CE Declaration of Conformity
25 mL
25 mL
12
3
6
9
30"
Read the relevant SDS sheet before performing the test.
Safety Data Sheets are available at: www.hannainst.com
Safety Data Sheets
Sample pH should be between 3 and 4 to avoid developed
color to fade or turbidity.