Hanna Instruments HI 96769 - Manual

Range 0.00 to 3.50 mg/L (as SDBS)
Resolution 0.01 mg/L
Accuracy ±0.04 mg/L ±3% of reading @ 25°C
Typical EMC Deviation ±0.01 mg/L
Light Source Tungsten lamp
Light Detector Silicon Photocell with narrow band inter-
ference filter @ 610 nm
Method Adaptation of the USEPA method 425.1 and
Standard Methods for the Examination of
Water and Wastewater, 20
th edition, 5540C,
Anionic Surfactants as MBAS.
Environment 0 to 50°C (32 to 122°F); max 95% RH
non-condensing
Battery Type 1 x 9 volt
Auto-Shut off After 10' of non-use in measurement mode;
after 1 hour of non-use in calibration mode;
with last reading reminder.
Dimensions 192 x 102 x 67 mm
(7.6 x 4 x 2.6")
Weight 290 g (10 oz.).
INSTRUCTION MANUAL
HI 96769 HI 96769 HI 96769 HI 96769 HI 96769
Preliminary examination
For more details about spare parts and
accessories see “Accessories”
Technical specifications
Functional description
Errors and warnings
Measurement procedure
Anionic Surfactants
ISM
8
Please examine this product carefully. Make sure that the instrument is
not damaged. If any damage occured during shipment, please notify
your Dealer.
Each HI 96769 Ion Selective Meter is supplied complete with:
• Two Sample Cuvettes and Caps
• 9V Battery
• Instruction Manual
Note: Save all packing material until you are sure that the instrument
works correctly. Any defective item must be returned in its original
packing.
1) GLP/ key: press to enter GLP mode. In calibration mode press to
edit the date and time.
2) CAL CHECK key: press to perform the validation of the meter, or press
and hold for three seconds to enter the calibration mode.
3) ZERO/CFM key: press to zero the meter prior to measurement, to
confirm edited values or to confirm factory calibration restore.
4) READ/ /TIMER key: In measurement mode, press to make a
measurement, or press and hold for three seconds to start a pre-
programmed countdown prior to measurement. In
GLP mode press to
view the next screen.
5) ON/OFF key: to turn the meter on and off.
6) Liquid Crystal Display (LCD)
7) Cuvette alignment indicator
8) Cuvette holder
DISPLAY ELEMENTS DESCRIPTION
1) The measuring scheme (lamp, cuvette, detector), appears during
different phases of zero or reading measurement
2) Error messages and warnings
3) The battery icon shows the charging level of the battery
4) The hourglass appears when an internal checking is in progress
5) Status messages
6) The chronometer appears when the reaction timer is running
7) The month, day and date icons appear when a date is displayed
8) Four digit main display
9) Measuring units
10) Four digit secondary display
ON ZERO READING
Light High: There is too much light to perform
a measurement. Please check the preparation of
the zero cuvette.
Light Low: There is not enough light to perform
a measurement. Please check the preparation of
the zero cuvette.
No Light: The instrument cannot adjust the
light level. Please check that the sample does
not contain any debris.
Inverted cuvettes: The sample and the
zero cuvette are inverted.
Zero: A zero reading was not taken. Follow
the instructions of the measurement
procedure for zeroing the meter.
ON SAMPLE READING
DURING CALIBRATION PROCEDURE
Standard Low: The standard reading is less
than expected.
Standard High: The standard reading is higher
than expected.
Cap error: Appears when external light enters in
the analysis cell. Assure that the cuvette cap is
present.
OTHER ERRORS AND WARNINGS
Under range: A blinking “0.00” indicates that
the sample absorbs less light than the zero reference.
Check the procedure and make sure you use the
same cuvette for reference (zero) and measurement.
Over Range: A flashing value of the maximum
concentration indicates an over range condition. The
concentration of the sample is beyond the programmed
range: dilute the sample and re-run the test.
1• Turn the meter on by pressing ON/OFF.
2• When the beeper sounds briefly and the
LCD displays dashes, the meter is ready.
The blinking “ZERO” indicates that the
instrument needs to be zeroed first.
3• Fill the graduated glass vial with 25 mL of
sample.
For most accurate results, use of a class A
laboratory pipette is strongly recommended.
Alternatively, it is possible to use the plastic pipette
to fill the glass vial up to the 25 mL mark.
4• Add 2 drops of HI 95769A-0 Anionic
Surfactants Reagent A and 2 drops of
HI 95769B-0
Anionic Surfactants Reagent B.
5• Close the glass vial with its cap and invert
to mix. The solution will turn blue.
6• Add exactly 10 mL of Chloroform reagent.
For most accurate results, use a class A glass
laboratory pipette is strongly recommended.
Alternatively, it is possible to use another
clean plastic pipette to fill the vial up to the
10 mL mark.
Note:
Chloroform is heavier than water
thus it will sink to the bottom of the
graduated glass vial. Do not mix up the
pipettes.
7• Close tightly the glass vial with its cap and
shake it vigorously for 30 seconds.
Note:
Block the cap with a finger during shaking.
8• Press and hold READ/ READ/ READ/ READ/ READ/ /TIMER /TIMER /TIMER /TIMER /TIMER for three
seconds and the display will show the
countdown. The beeper is playing a beep
3
4
5
6
During this period, the chloroform layer
separates from the aqueous layer: the color
of the aqueous layer will fade slightly if
anionic surfactants are present, while the
chloroform layer will turn blue.
9• Remove the cap.
10•Using the long plastic pipette, remove the
upper aqueous layer and discard. Do not
remove the lower chloroform layer.
11•Add to the vial about 15 mL of deionized
water, up to the 25 mL mark.
12•Add 2 drops of HI 95769A-0 Anionic
Surfactants Reagent A.
13• Close tightly the glass vial with its cap and
shake it vigorously for 30 seconds.
Note:
Block the cap with a finger during shaking.
14•Press and hold READ/ READ/ READ/ READ/ READ/ /TIMER /TIMER /TIMER /TIMER /TIMER for three
seconds and the display will show the
countdown. The beeper is playing a beep
at the end of countdown period.
Alternatively, wait for 2 minutes leaving the
vial capped and undisturbed.
During this period, the chloroform layer
separates from the aqueous layer.
15•Remove the cap.
16•Insert a clean plastic pipette below the
upper aqueous layer to transfer only the
lower
chloroform layer into a cuvette paying attention
not to transfer the upper aqueous layer too.
17•Cap the cuvette. This is the reacted sample (#2).
18•Fill another cuvette with 10 mL of Chloroform
reagent up to the 10 mL mark and place
the cap. This is the blank (#1).
19•Place the blank (cuvette #1) into the
cuvette holder and ensure that the notch
on the cap is positioned securely into the
groove.
20•Press ZERO/CFM and the lamp, cuvette
and detector icons will appear on the display,
depending on the measurement phase.
21•After a few seconds, the display will show
“-0.0-” . The meter is now zeroed and
7, 13
8, 14
11-12
16
w w w . h a n n a i n s t . c o m
Dear Customer,
Thank you for choosing a Hanna 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. If you need additional
technical information, do not hesitate to e-mail us at [email protected].
Cooling lamp: The instrument waits for the
lamp to cool down.
Battery low: The battery must be replaced
soon.
Dead battery: This indicates that the battery
is dead and must be replaced. Once this
indication is displayed, the meter will lock up.
Change the battery and restart the meter.
3’’
10
or
Notes: The solution in the cuvette must be limpid.
If the solution is clouded, you can improve separation between
the chloroform and aqueous layers by gently warming the cuvette
(for instance by holding the cuvette in the hand).
If the chloroform layer contains some aqueous drops hanging on
the cuvette wall, gently swirl or invert the cuvette.
It is important to transfer at least 7 mL of chloroform layer into the
measurement cuvette, thus up to 0.5 cm (1/4”) below the 10 mL mark.
If the transferred volume is lower than 7 mL, the accuracy of the test
may be affected. Please repeat the test waiting for longer than 2
minutes, to allow complete separationbetween the two phases.
17
18
19, 23
at the end of countdown period.
Alternatively, wait for 2 minutes leaving the
vial capped and undisturbed.