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1.1 Pyxis Major Features
The SP-910 analyzer shown in Figure 1 is a combination of photometer and
fluorometer. It provides colorimetric measurements at 7 LED wavelengths, fluorometric
measurement of fluorescent tracer PTSA and fluorescein, and nephelometric turbidity
measurement using white LED and infrared LED as excitation sources. The SP-910 is
pre-calibrated for colorimetric measurements of analyses common in industrial water
treatment and other water testing applications in the laboratory or in the field, such as
measuring chlorine, phosphate, iron, and copper. Main features include:
The SP-910 is pre-calibrated for measuring PTSA (pyrenetetrasulfonic acid) in the
range of 0 to 300 ppb. The fluorescence PTSA measurement is automatically
compensated for sample color and turbidity interference.
The SP-910 is pre-calibrated for measuring fluorescein in the range of 0 to 600
ppb.
The SP-910 is pre-calibrated for measuring turbidity in the range of 0 to 200 NTU.
Automatically select the primary wavelength according to the method selected and
switches to the secondary wavelength to extend the primary measurement range.
Figure 1 Insert the Sample Vial
Display a concentration-time profile curve in a colorimetric measurement. The user
can terminate the timing process and take a reading if the displayed concentration
reaches a plateau before completing the predefined time period.
The user can update the calibration parameter of any pre-calibrated colorimetric
method by testing a standard solution first and then following a setup procedure to
update the calibration parameters.
1.2 Unpackaging the Instrument
Remove the instrument and accessories from the shipping container and inspect each
item for any damage that may have occurred during shipping. Verify that all items
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