Hanna-instruments HI 729 Manuale Utente Pagina 2
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• Turn the meter on by pressing the button,
all segments will be displayed. When the
display shows “Add”, “C.1” with “Press”
blinking, the meter is ready.
• Using supplied syringe add 2 mL of HI 729S
SPADNS reagent to both cuvettes.
• Fill the first cuvette to the line with 8 mL of
deionized water and the second cuvette to
the line with 8 mL of sample. Cap cuvettes
and invert several times to mix.
• Place the first cuvette (deionized water) into
the meter and close the cap.
• Press and hold the button until the timer is
displayed on the LCD. Alternatively wait for
two minutes and press the button.
• When the display shows “Add”, “C.2” with
“Press” blinking the meter is zeroed.
• Remove the cuvette.
• Insert the second cuvette (sample) into the
instrument and press the button.
• The instrument directly displays the
concentration of fluoride in ppm.
The meter automatically turns off after 10
minutes.
• It is important that the sample does not contain any debris.
• Whenever the cuvette is placed into the measurement cell, it must be dry outside,
and completely free of fingerprints, oil and dirt. Wipe it thoroughly with HI 731318
or a lint-free cloth prior to insertion.
• Shaking the cuvette can generate bubbles, causing higher readings. To obtain
accurate measurements, remove bubbles by swirling or by gently tapping the
cuvette.
• Do not let the reacted sample stand for too long after reagent is added, as
accuracy will be affected.
• After the reading it is important to immediately discard the sample, otherwise
the glass might become permanently stained.
REAGENT SETS
HI 729-26 Reagent set for 20 tests (4 x HI 729S and a 1 mL syringe with tip)
OTHER ACCESSORIES
HI 729-11 Fluoride LR Certified Standard Kit
HI 740142 1 mL graduated syringe
HI 740028 1.5V AAA batteries (4 pcs)
HI 731318 Cloth for wiping cuvettes (4 pcs)
HI 731321 Glass cuvettes (4 pcs)
HI 731225 Cuvette cap for checker HC (4 pcs)
HI 93703-50 Cuvette cleaning solution (230 mL)
HI 70436 Deionized water (1 gal)
Recommendations for Users
Before using this product, make sure that it is entirely suitable for your specific application and for the
environment in which it is used.
Operation of this instrument may cause unacceptable interferences to other electronic equipment, thus
requiring the operator to take all necessary steps to correct interferences.
Any variation introduced by the user to the supplied equipment may degrade the instrument’s EMC
performance.
To avoid damage or burns, do not put the instrument in microwave oven. For the safety of you and the
instrument do not use or store the instrument in hazardous environments.
For additional information, contact your
dealer or the nearest
Hanna Customer Service Center.
To find a Hanna Office in your area,
visit our web site:
www.hannainst.com
Hanna Instruments reserves the right to modify the design, construction or
appearance of its products without advance notice.
Battery management
To save the battery, the instrument shuts down after 10 minutes of non-use.
One fresh battery lasts for a minimum of 5000 measurements. When the battery is dead the
instrument will display “bAd” then ”bAt” for 1 second and then turns off.
To restart the instrument, the battery must be replaced with a new one.
To replace the instrument’s battery:
• Turn the instrument off by holding the button until the meter shuts off.
• Turn the instrument upside down and remove the battery cover with a screwdriver.
• Remove the battery from its location and replace it with a new one, inserting the
negative end first.
• Insert the battery cover and replace the screw with a screwdriver.
IST729 05 /11
Measurement procedure: Accessories:Tips for an accurate measurement
10 mL
10 mL
1
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