Hanna Instruments HI97105, Инструкция по эксплуатации, Страница: 5 / 40

5 Specifications
3.3. METHODS
Range Resolution
Accuracy
at 25 °C (77 °F)
LED Description
pH
6.3 to 8.6
pH
0.1
pH
±0.2 pH
of reading
525 nm
Colorimetric Adaptation of
Phenol Red Method.
Alk
alinity
0.0 to 20.0
dKH
0.1
dKH
±0.3 dKH
±5 %
of reading
610 nm
Colori metric Method.
Reaction causes a distinctive range of
colors from yellow to greenish blue to
develop.
Ammonia
0.00 to 2.50
ppm
(as NH
3
)
0.01
ppm
±0.05 ppm
±5 %
of reading
610 nm
Adaptation of the Salicylate Method .
The Reaction between Ammonia and
Ammonium and the reagent causes a
blue‑green tint in the sample.
Calcium
200 to 600
ppm
1
ppm
±6 %
of reading
610 nm
Adaptation of Zincon Method.
Magnesium
1000 to 1800
ppm
(as Mg
2+
)
5
ppm ±5 %
of reading
610 nm
Adaptation of Colorimetric EDTA Method
using calmagite indicator
.
Reaction between magnesium and the
reagents causes a blue to violet tint in the
sample.
Nitrate
LR
0.00 to 5.00
ppm
(as NO
3
¯)
0.01
ppm
±0.25 ppm
±2 %
of reading
525 nm
Zinc Reduction Method.
Reaction between nitrate and the reagent
causes a pink tint in the sample.
Nitrate HR
0.0 to 75.0
ppm
(as NO
3
¯)
0.1
ppm
±2.0 ppm
±5 %
of reading
525 nm
Zinc Reduction Method .
Reaction between nitrate and the reagent
causes a pink tint in the sample.
Nitrite ULR
0 to 200
ppb
(as NO
2
¯‑ N)
1
ppb
±10 ppb
±4 %
of reading
525 nm
Adaptation of EPA Diazotization Method
354.1.
Reaction between nitrite and the
reagent causes a pink tint in the sample.
Phosphate ULR
0.00 to 0.90
ppm
0.01
ppm
±0.02 ppm
±5 %
of reading
610 nm
Adaptation of Standard Methods for
Examination of Water and Wastewater,
20th Edition, Ascorbic Acid Method
.
Reaction between phosphate and the
reagent causes a blue tint in the sample.