HI758
Marine Calcium
INSTRUCTION MANUAL
Reagent Sets
HI758-26 Reagents for 25 Marine Calcium tests
Other Accessories
HI758-11 Marine Calcium Certified Standard Kit
HI731315 Glass Cuvettes and Caps for Checker®HC Colorimeters (2 pcs.)
HI731318 Cloth for wiping cuvettes (4 pcs.)
HI731339P 0.1 mL minipipette
HI731349P Tip for 0.1 mL minipipette (10 pcs.)
HI740028P 1.5V AAA batteries (12 pcs.)
HI70436M Deionized water (230 mL)
HI93703-50 Cuvette cleaning solution (230 mL)
Accessories
IST758 05/18
HI758 is warranted for a period of one year after date of purchase against defects in
workmanship and materials when used for their intended purpose and maintained according
to instructions. This warranty is limited to repair or replacement free of charge. Damage due
to accidents, misuse, tampering or lack of prescribed maintenance is not covered. If service
is required, contact your local Hanna Instruments Office. If under warranty, report the model
number, date of purchase, serial number and the nature of the problem. If the repair is not
covered by the warranty, you will be notified of the charges incurred. If the instrument is to
be returned to Hanna Instruments, first obtain a Return Goods Authorization number from the
Technical Service department and then send it with shipping costs prepaid. When shipping any
instrument, make sure it is properly packed for complete protection.
Before using Hanna Instruments products, make sure that they are entirely suitable for
your specific application and for the environment in which they are used. Operation of
these instruments may cause unacceptable interferences to other electronic equipment,
thus requiring the operator to take all necessary steps to correct such interferences. Any
variation introduced by the user to the supplied equipment may degrade the instrument’s
EMC performance. To avoid damages or burns, do not put the instrument in microwave
oven. For yours and the instrument safety do not use or store the instrument in hazardous
environments.
Recommendations for Users
Warranty
To conserve battery, the instrument shuts down after
10 minutes of non-use and 2 minutes after reading. 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 replace the 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. Replace the battery cover and screw.
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 HI731318 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.
• Attach the pipette tip.
• Press the button down to the first stop.
• Immerse the pipette tip in the liquid approximately 2-3 mm.
• Slowly let the button move back to the original position, wait 2 seconds.
• Remove the pipette tip from the liquid.
• To dispense the liquid, place the pipette tip on the inside wall of the container.
• Slowly press the button down to the first stop.
• Wait until all of the liquid has been dispensed.
• Press the button down to the second stop, this will allow any remaining liquid to be dis-
pensed. First stop Second stopOriginal position
Minipipette Instructions:
Tips for an Accurate Measurement
Battery Management
