Pyxis SP-900 - Colorimetric Measurement Guide; Supported Colorimetric Methods

11
4 Colorimetric Measurement
4.1 Supported Methods
A wide range of colorimetric methods is supported by the Pyxis SP-900 analyzer and
the number of them keeps increasing with continuous development of Pyxis. See
corresponding Hach® methods in Appendix A.
Table 2 List of Supported Colorimetric Methods
Abbreviated
Method
Name
Method Name
Description
Range
CL-F
F-Chlorine
Free chlorine, DPD method
2.2 ppm
CL-T
T-Chlorine
Total chlorine, DPD method
2.2 ppm
CuBi
Cu_Bicinch
Bicinchoninate, EPA approved
for reporting wastewater
analysis
5.0 ppm
DEHA
DEHA
Method for N,N-
diethylhydroxylamine and
other oxygen scavengers
0.5 ppm
CaMg
CaMg
Calmagite method for calcium
and magnesium
4.00 ppm as
CaCO
3
FePh
Fe_phenanth
Total iron using 1,10-
phenanthroline, USEPA
approved for reporting
wasterwater analysis
3.00 ppm
FeZi
FeZine
FerroZine method
1.300 ppm
FeTp
FeTptz
Total iron using TPTZ
1.80 ppm
MoHR
Mo_HighRange
High range molybdate
40.0 ppm
MoLR
Mo_LowRange
Low range molybdate using
ternary complex method
3.0 ppm
NO2H
NO2H
High range nitrite, ferrous
sulfate method
150 ppm as
NO
2
NO2L
NO2L
Low range nitrite, diazotization
method, USEPA approved for
reporting wastewater and
drinking water analysis
0.350 ppm as
NO
2
PMoV
OPO4-MoV
Reactive phosphate using
molybdovanadate method
30.0 ppm as
PO
4
OPO4
OPO4
Reactive phosphate using
ascorbic acid molybdenum
blue method, USEPA
accepted for wastewater
analysis
2.5 ppm as
PO
4
OrgP
Phosphonate
UV digestion and ascorbic
acid reduction molybdenum
blue method
7.1 ppm as
PBTC
PAmi
OPO4-Amino
Reactive phosphate, amino
30.0 ppm