Hanna-instruments HI 83205-2008 Manuale Utente Pagina 33
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Phosphate LR
• Reinsert the cuvette into the instrument.
• Press TIMER and the display will show the countdown prior to the
measurement or, alternatively, wait for 3 minutes and press READ.
When the timer ends the meter will perform the reading. The
instrument displays concentration in mg/L of phosphate (PO
4
3-
).
• Press the or to access the second level of functions.
• Press the Chem Frm functional key to convert the result in mg/L of phosphorus (P) and phosphorus
pentoxide (P
2
O
5
).
• Press the or to go back to the measurement screen.
INTERFERENCES
Interference may be caused by:
Iron above 50 mg/L
Silica above 50 mg/L
Silicate above 10 mg/L
Copper above 10 mg/L
Hydrogen sulfide, arsenate, turbid sample and highly buffered samples also interfere.
Phosphate LR
PHOSPHATE LOW RANGE
SPECIFICATIONS
Range 0.00 to 2.50 mg/L
Resolution 0.01 mg/L
Accuracy ±0.04 mg/L ±4% of reading
Typical EMC Dev. ±0.01 mg/L
Light Source Tungsten lamp with narrow band interference filter @ 610 nm
Method Adaptation of the Ascorbic Acid method. The reaction between phosphate and the
reagent causes a blue tint in the sample.
REQUIRED REAGENTS
Code Description Quantity
HI 93713-0 Powder reagent 1 packet
REAGENT SETS
HI 93713-01 Reagents for 100 tests
HI 93713-03 Reagents for 300 tests
For other accessories see page 73.
MEASUREMENT PROCEDURE
• Select the
Phosphate LR
method using the procedure
described in the
Method Selection
section (see page 12).
• Rinse, cap and shake the cuvette several times with unreacted
sample. Fill the cuvette with 10 mL of sample up to the
mark and replace the cap.
• Place the cuvette into the holder and close the lid.
• Press ZERO key. The display will show “-0.0-” when the meter is
zeroed and ready for measurement.
• Remove the cuvette and add the content of one packet of
HI 93713-0 reagent. Replace the cap and shake gently
(for about 2 minutes) until the powder is completely
dissolved.
10 mL
- HI 83205 1
- PRELIMINARY EXAMINATION 2
- ABBREVIATIONS 2
- GENERAL DESCRIPTION 2
- TABLE OF CONTENTS 2
- PRINCIPLE OF OPERATION 3
- PRECISION AND ACCURACY 3
- NEED TO KNOW 4
- FUNCTIONAL DESCRIPTION 4
- USING CUVETTES 5
- METHOD REFERENCE TABLE 6
- HEALTH & SAFETY 6
- OPERATIONAL GUIDE 7
- SETUPSETUP 8
- ALUMINUM 9
- HELP MODEHELP MODE 9
- HELP MODE 9
- AMMONIA MEDIUM RANGE 10
- AMMONIA LOW RANGE 11
- SPECIFICATIONS 12
- REQUIRED REAGENTS 12
- REAGENT SETS 12
- MEASUREMENT PROCEDURE 12
- INTERFERENCES 12
- FREE CHLORINE 13
- FREE CHLORINEFREE CHLORINE 13
- TOTAL CHLORINE 15
- CHLORINE DIOXIDE 16
- SAMPLING PROCEDURE 17
- CHROMIUM VI HIGH RANGE 18
- CHROMIUM VI LOW RANGE 19
- COPPER HIGH RANGE 20
- COPPER LOW RANGE 21
- HYDRAZINE 22
- IRON HIGH RANGE 23
- IRON LOW RANGE 24
- MOLYBDENUM 25
- NITRITE HIGH RANGE 28
- NITRITE LOW RANGE 29
- DISSOLVED OXYGEN 30
- PHOSPHATE HIGH RANGE 32
- PHOSPHATE LOW RANGE 33
- REQUIRED REAGENT 35
- ERRORS AND WARNINGS 36
- STANDARD METHODS 37
- DATA MANAGEMENT 37
- ACCESSORIES 37
- WARRANTY 38
- HANNA LITERATURE 38
- MAN83205 05/08 39
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