Pyxis SP-910 - Turn on SP-910; Connect Nebula to the SP-910

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7 Absorbance Measurement
The following steps are used to measure the absorbance values of a sample:
1. Press the ABS to launch the absorbance measurement page.
2. Place a vial filled with the blank sample in the sample vial compartment. Press
the ZERO button to zero the method.
3. Place a vial filled with the sample in the sample vial compartment. Press the
READ button to read absorbance. The absorbance values of first 6
wavelengths (Table 3) will be shown. Press the READ button again to show
the absorbance values of the last three wavelengths.
Figure 23 Absorbance Measurement
Press EXIT to return to the main page. Timing function for absorbance measurement may
not be available for some models.
Table 3 Wavelength of each channel
Channel
Wavelength (nm)
1
560
2
570
3
470
4
not used
5
455
6
525
7
365
8
630
9
420
Note that the absorbance values measured with the SP-910 is generally smaller than those
measured with a spectrophotometer equipped with a monochromatic light source or
detector. The SP-910 absorbance values should, however, linearly correlate with the