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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 95721

 Ion Selective Meter is supplied complete with:

• Two Sample Cuvets and Caps
• 9V Battery
• Scissors
• Two CAL CHECK™ Cuvets (HI 95721-11) with Quality Certificate
• Tissue for wiping cuvets
• Instruction Manual and Quick Reference Guide
• Instrument Quality Certificate
• Rigid carrying case

Note:

save all packing material until you are sure that the instrument works correctly. Any defective
item must be returned in its original packing.

PRELIMINARY EXAMINATION

18

REAGENT SETS
HI 93721-01

Reagents for 100 Iron High Range tests

HI 93721-03

Reagents for 300 Iron High Range tests

OTHER ACCESSORIES
HI 95721-11

CAL CHECK™ Standard Cuvets     (1 set)

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 731331

Glass cuvets (4 pcs)

HI 731335

Caps for cuvets (4 pcs)

HI 93703-50

Cuvets cleaning solution (230 mL)

Battery replacement must only take place in a non-
hazardous area.
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. Insert the battery and replace
the cover.

9V

SLIDE

OFF

FACTORY CALIBRATION RESET

It is possible to restore factory calibration:
• Enter the 

calibration mode

 by holding CAL CHECK

for three seconds.

• Hold ZERO for 10 seconds. The display will show

for 2 seconds “F.CAL” and "721" appears. The
factory configuration is automatically restored and
the instrument is ready for measurement.

BATTERY REPLACEMENT

ACCESSORIES

Summary of Contents for HI 95721C

Page 1: ...1 Instruction Manual HI 95721C Iron High Range ISM This Instrument is in Compliance with the CE Directives w w w h a n n a i n s t c o m 20 MAN95721R2 07 06 w w w h a n n a i n s t c o m...

Page 2: ...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 put the instru...

Page 3: ...HER ACCESSORIES HI 95721 11 CAL CHECK Standard Cuvets 1 set 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 731331 Glass...

Page 4: ...d treated waters and Standard Method 3500 Fe B for water and wastewater The reagent contains both a reducing and a complexing agent the first converts iron present in the sample to the ferrous Fe2 sol...

Page 5: ...ndard solution of 1 50 mg L Iron and a representative lot of reagent an operator obtained with a single instrument a standard deviation of 0 01 mg L SPECIFICATIONS PRECISION AND ACCURACY 16 CALIBRATIO...

Page 6: ...mps and narrow band interference filters to guarantee both high performance and reliable results HI 95 series block diagram optical layout PRINCIPLE OF OPERATION 15 Turn the meter on by pressing ON OF...

Page 7: ...ases it is necessary to close the cuvet to prevent any contamination 1 Liquid Crystal Display LCD 2 Cuvet Holder 3 Cuvet alignment indicator 4 ON OFF key 5 ZERO key 6 READ TIMER key 7 CAL CHECK key FU...

Page 8: ...3 the Month and Day icons appear above the number of month and day when a date is displayed 4 the blinking Battery icon appears when the battery voltage is getting low 13 MEASUREMENT PROCEDURE Turn th...

Page 9: ...bration is selected GUIDE TO DISPLAY CODES 12 It is important that the sample does not contain any debris This would corrupt the reading Each time the cuvet is used the cap must be tightened to the sa...

Page 10: ...zero reading was not taken Follow the instruction in the measurement procedure for zeroing the meter 11 Under range A blinking 0 00 indicates that the sample absorbs less light than the zero reference...

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