Справочник Пользователя для Hanna Instruments c 214
28
CHLORINE, FREE
SPECIFICATIONS
Range
0.00 to 5.00 mg/L
Resolution
0.01 mg/L from 0.00 to 0.99 mg/L;
0.1 mg/L above 0.99 mg/L
0.1 mg/L above 0.99 mg/L
Precision
±0.04 @ 1.00 mg/L
Typical EMC
±0.01 mg/L
Deviation
Light Source
Light Source
Tungsten lamp with narrow band interference filter
@ 525 nm
@ 525 nm
Method
Adaptation of the EPA method 330.5 and
Standard
Methods for the Examination of Water and
Wastewater, 20
Wastewater, 20
th
edition, 4500-Cl G, DPD method.
The reaction between free chlorine and the DPD
reagent causes a pink tint in the sample.
reagent causes a pink tint in the sample.
REQUIRED REAGENTS
Code
Description
Q.ty/test
HI 93701-0
DPD Powder Reagent
1 packet
REAGENT SETS
HI 93701-01
Reagents for 100 tests
HI 93701-03
Reagents for 300 tests
For other accessories see page 77.
MEASUREMENT PROCEDURE
• Select the program number corresponding to Free Chlorine on the
secondary LCD by pressing PROGRAM t and s.
• Fill an empty sample vial with 10
mL of unreacted sample, up to the
center of the white band, then
replace the cap. This is the blank.
Note: the exact measurement of the
sample volume is not needed: just
fill the vial to a level between the
lower and the upper edge of the
white band.
center of the white band, then
replace the cap. This is the blank.
Note: the exact measurement of the
sample volume is not needed: just
fill the vial to a level between the
lower and the upper edge of the
white band.
• Mark the vial with a pencil on the
white band to place an orientation
sign. Use this sign to insert the test
vial always in the same position into
the holder.
sign. Use this sign to insert the test
vial always in the same position into
the holder.
Chlorine, Free
53
OXYGEN DEMAND, CHEMICAL HIGH RANGE
SPECIFICATIONS
Range
0 to 15000 mg/L
Resolution
10 mg/L
Precision
±220 @ 10000 mg/L
Typical EMC
±10 mg/L
Deviation
Light Source
Light Source
Tungsten lamp with narrow band interference filter
@ 610 nm
@ 610 nm
Method
Adaptation of the USEPA 410.4 approved method
for the COD determination on surface waters and
wastewaters. Oxidizable organic compounds reduce
the dichromate ion (orange) to the chromic ion
(green). The amount of chromic ion formed is
determined.
for the COD determination on surface waters and
wastewaters. Oxidizable organic compounds reduce
the dichromate ion (orange) to the chromic ion
(green). The amount of chromic ion formed is
determined.
REQUIRED REAGENTS
Code
Description
Q.ty/test
Q.ty/set
*
Reagent Vial
1 vial
25 vials
---
Deionized Water
0.2 mL
optional
*
Reagent Vial identification: (no letter), green cap.
Note: Store the unused vials in their container in a cool and dark place.
REAGENT SET
HI 93754C-25 Reagents for up to 24 tests
REQUIRED ACCESSORIES
C 9800-01
Hanna reactor (115 VAC)
C 9800-02
Hanna reactor (230 VAC)
HI 740216
Test tube cooling rack (25 holes)
HI 740217
Laboratory bench safety shield
For other accessories see page 77.
MEASUREMENT PROCEDURE
Before starting to use the reagent kit it is recommended
to read carefully all the instructions and the Health &
Safety Data Sheet (HSDS). Pay particular attention to all
warnings, cautions and notes. Failure to do so may result
in serious injury to the operator.
to read carefully all the instructions and the Health &
Safety Data Sheet (HSDS). Pay particular attention to all
warnings, cautions and notes. Failure to do so may result
in serious injury to the operator.
Reagent Blank Correction: This method needs a reagent blank
correction. A single blank vial may be used more than once. The blank
vial is stable for several months (room temperature). For most accurate
measurement, run a blank for each set of measurements and always use
the same lot of reagents for blank and samples.
correction. A single blank vial may be used more than once. The blank
vial is stable for several months (room temperature). For most accurate
measurement, run a blank for each set of measurements and always use
the same lot of reagents for blank and samples.
COD HR