Jenway Genova Nano German - Manual (Page 66)

When a reference wavelength is included these equations are modified as follows:
1. ∑ = xF 1 *(l 1- l 4 )
2. ∑ = (xF 1 *(l 1- l 4 )) - (xF 2 *l 2 )
Repeat presses will cycle through the options available.
The concentration equation factors can be edited by
pressing the key adjacent to the concentration factor icons.
This opens the extended number entry screen. Use the
keys at the bottom of the screen to select the digit to be
changed. The key below the digits must be pressed twice
to select the adjacent digit. For example 00 the first press
of the key alters 10, the second press alters 01. Use the
keys adjacent to the arrow icons to increase or decrease
the selected number. Factor values of 0.001 to 9999.999 can be entered. The factor value can be reset
to one by pressing the key adjacent to the 001 icon. Once the factor has been entered press the key
adjacent to the tick icon to save and return to the settings menu. The entered value is displayed in the
settings menu adjacent to the factor icon.
13.3 CALIBRATION
Insert a cuvette containing the blank solution into the
sample chamber and close the instrument lid. Press the
key below the calibrate to zero absorbance icon. This
will measure the zero absorbance level at each of the
wavelengths specified in the method settings.
Once the calibration is complete the measure sample icon appears and the sample can be measured. If
the wavelength is adjusted before a sample is measured the measure sample icon will disappear and the
instrument must be calibrated again at the new wavelength.
13.4 SAMPLE MEASUREMENT
Insert a cuvette containing the sample to be analysed into
the sample chamber and press the key below the sample
measurement icon. The instrument will take a reading at
each of the specified wavelengths and will then show the
calculated concentration and ratio values on the operating
menu screen.
Additional information can be viewed by pressing the key
adjacent to the calculation icon. The screen will show the
photometric readings at each of the specified wavelengths
and the full concentration and ratio calculations.
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