Advanced Operations
6.5
In the
Absorbance measures the amount of light absorbed by the sample, in units of absorbance.
%Transmittance measures the percent of the original light that passes through the sample and reaches the detector.
Turning on the concentration factor allows selection of a specific multiplier for converting absorbance readings to concentration. In a graph of concentration versus the absorbance, the concentration factor is the slope of the line. Concentration is calculated using a single factor for each wavelength, which is input by the user.
6.5.1 Set the reading mode at different wavelengths
Press Multi Wavelength in the Main Menu. Press Options for
Parameter Setup.
| Table 13 | |
Options | Description | |
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More | For further Options | |
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Store Off/On | With the Store On setting, all measurement data are stored automatically. With the Store Off | |
setting, no measurement data are stored. | ||
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% Trans/Abs | To switch to % transmittance, concentration or absorbance readings | |
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λ Wavelength | To enter the measurement wavelength. Use the alphanumeric keypad to enter the measurement | |
wavelength. The entered wavelength must be in the range from | ||
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| This functions as a stopwatch. It helps to ensure that the steps of an analysis are correctly timed | |
Timer icon | (e.g. reaction times, wait times, etc., can be exactly specified). When the specified time has | |
elapsed, an acoustic signal is emitted. The use of the timer has no influence on the measurement | ||
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Concentration Factor | Multiplication factor for converting absorbance values into concentration values. | |
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Concentration | To select the position of the decimal point in the calculated concentration readings. | |
Resolution | ||
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Absorbance Formula | Calculation basis for evaluating samples | |
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Save as User Program | To store the selected parameters as a User Program, see section 6.1 on page 61 | |
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