Operational guide accessories, Declaration of conformity – Hanna Instruments HI 93717 User Manual

Page 2

REAGENT SETS

HI 93717-01

Reagents for 100 tests

HI 93717-03

Reagents for 300 tests

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)

MEASUREMENT PROCEDURE

• Turn the meter on by pressing

ON/OFF.

• When the LCD displays

“- - -”, it is ready.

• Fill the cuvet with 10 mL of

unreacted sample, up to the
mark, 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.

• Remove the cuvet.

• Add 10 drops of

HI 93717A-0 Phosphate HR
Reagent A to the cuvet.

• Add the content of one packet

of HI 93717B-0 Phosphate
HR Reagent B to the cuvet.

OFF

ZERO

READ

TIMED

5’

READ

DIRECT

• Replace the cap and shake

gently until dissolution is
complete.

• Reinsert the cuvet into the

instrument.

• Press READ TIMED and the display will show the

countdown prior to the measurement or, alternatively,
wait for 5 minutes and press READ DIRECT. In both
cases “SIP” will appear during measurement.

• The instrument directly displays concentration in mg/L of

phosphate (PO

) on the Liquid Crystal Display.

INTERFERENCES

Interference may be caused by:
Sulfide
Chloride above 150000 mg/L as Cl

–

Calcium above 10000 mg/L as CaCO

Magnesium above 40000 mg/L as CaCO

Ferrous iron above 100 mg/L.
Color or suspended matter in large amounts will cause
interference. Therefore the turbidity should be removed by
prior filtration.

HI 93707 - Nitrite Low Range

x 10

10 mL

Operational Guide

Accessories

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.

Declaration of Conformity

Read the relevant SDS sheets before performing the test.

Safety Data Sheets are available at: www.hannainst.com

Safety Data Sheets

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 measurements,
remove such bubbles by swirling or by gently tapping the
vial.

• All the reaction times reported in this manual are referred

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.

SLIDE

OFF

Battery Replacement

Tips for an Accurate Measurement