Hanna-instruments HI 83099 Manuel d'utilisateur Page 58
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
115114
• Remove the cuvette and add the content of one packet of
HI 93750B-0 reagent. Replace the cap and gently mix for
one minute by slowly turning the cuvette upside down.
• Reinsert the cuvette into the instrument.
• Press Timer and the display will show the countdown prior to
the measurement or, alternatively, wait for 2 minutes and press
Read. When the timer ends the meter will perform the reading.
The instrument displays the results in mg/L (ppm) of
potassium (K).
• Press s or t to access the second level functions.
• Press the Chem Frm key to convert the result in mg/L of potassium oxide (K
2
O)
• Press s or t to return to the measurement screen.
• For ULTRA HIGH RANGE samples: follow the procedure described at page 115.
INTERFERENCES
Interferences may be caused by: Chloride above 12000 ppm
Ammonium above 10 ppm Magnesium above 8000 ppm as CaCO
3
Calcium above 10000 ppm as CaCO
3
Sodium above 8000 ppm
Potassium HR
POTASSIUM ULTRA HIGH RANGE
For samples containing more than 200 ppm of Potassium: follow the sample preparation procedure
described at page 18 for CONCENTRATED SAMPLES. Then add to the graduated cylinder 20 mL of the
prepared sample (for HR) and fill the cylinder with demineralized water from the Demineralizer Bottle up
to the 100 mL mark.
Follow the MEASUREMENT PROCEDURE at page 114. Read the result in mg/L of potassium on the display
and multiply the reading by 5 to obtain the actual concentration of Potassium.
Potassium HR
POTASSIUM HIGH RANGE
SPECIFICATIONS
Range 20 to 200 mg/L
Resolution 5 mg/L
Accuracy ±30 mg/L ±7% of reading at 25 °C
Typical EMC ±5 mg/L
Deviation
Light Source Tungsten lamp with narrow band interference filter @ 610 nm
Method Adaptation of the Turbidimetric Tetraphenylborate method. The reaction between
Potassium and reagents causes turbidity in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93750A-0 Potassium Reagent 6 drops
HI 93750B-0 Powder Reagent 1 packet
REAGENT SETS
HI 93750-01 Reagents for 100 tests
HI 93750-03 Reagents for 300 tests
For other accessories see page 132.
MEASUREMENT PROCEDURE
Note: for sample preparation follow the CONCENTRATED SAMPLES procedure at page 18.
• Select the
Potassium HR
method using the procedure
described in the
Method Selection
section (see page 12).
• Fill the cuvette with 10 mL of sample, up to the mark.
• Add six drops of HI 93750A-0, replace the cap and swirl
the solution.
• Place the cuvette into the holder and close the lid.
• Press the Zero key. The display will show “-0.0-” when the meter is zeroed and ready for
measurement.
10 mL
- HI 83099 1
- PRELIMINARY EXAMINATION 2
- GENERAL DESCRIPTION 2
- TABLE OF CONTENTS 2
- PRINCIPLE OF OPERATION 3
- PRECISION AND ACCURACY 3
- ABBREVIATIONS 3
- FUNCTIONAL DESCRIPTION 4
- USING CUVETTES 5
- METHOD REFERENCE TABLE 6
- HEALTH & SAFETY 6
- OPERATIONAL GUIDE 7
- SETUPSETUP 8
- SAMPLE PREPARATION 9
- HELP MODEHELP MODE 9
- HELP MODE 9
- ALUMINUM 11
- ALKALINITY 12
- AMMONIA MEDIUM RANGE 13
- AMMONIA LOW RANGE 14
- INTERFERENCES 15
- SPECIFICATIONS 15
- REQUIRED REAGENTS 15
- REAGENT SETS 15
- MEASUREMENT PROCEDURE 15
- FREE CHLORINEFREE CHLORINE 17
- FREE CHLORINE 17
- TOTAL CHLORINE 19
- CHLORINE DIOXIDE 20
- SAMPLING PROCEDURE 21
- CHROMIUM VI HIGH RANGE 22
- CHROMIUM VI LOW RANGE 23
- COLOR OF WATER 24
- COPPER HIGH RANGE 25
- COPPER LOW RANGE 26
- CYANURIC ACID 27
- FLUORIDE 28
- CALCIUM HARDNESS 29
- MAGNESIUM HARDNESS 30
- SAMPLE DILUTION 31
- HYDRAZINE 32
- IRON HIGH RANGE 34
- IRON LOW RANGE 35
- MAGNESIUM 36
- MANGANESE HIGH RANGE 37
- MANGANESE LOW RANGE 38
- MOLYBDENUM 40
- NICKEL HIGH RANGE 41
- NICKEL LOW RANGE 42
- NITRITE HIGH RANGE 45
- NITRITE LOW RANGE 46
- DISSOLVED OXYGEN 47
- REAGENT SET 48
- REQUIRED ACCESSORIES 48
- Oxygen Demand, Chemical 49
- HR (COD) 49
- Selection 49
- PHOSPHATE HIGH RANGE 55
- PHOSPHATE LOW RANGE 56
- PHOSPHORUS 57
- POTASSIUM HIGH RANGE 58
- POTASSIUM MEDIUM RANGE 59
- POTASSIUM LOW RANGE 60
- REQUIRED REAGENT 64
- ERRORS AND WARNINGS 65
- STANDARD METHODS 66
- DATA MANAGEMENT 66
- ACCESSORIES 67
- WARRANTY 68
- HANNA LITERATURE 68
- Printed in EUROPE 69
- (ROMANIA) 69
- MAN83099 04/12 69
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