500 D 01/2012
16a
3.4.5 905 TRANSMISSION
In addition to the absorbance, transmission is a very significant variable in photo-
metry. Transmission is the transparency of a sample solution to the light used for
measurement. The transmission is expressed directly as percentage.
Transmission in % = light transmited through test sample x 100
light transmited through blank value
The dimensionless variable light transmited through test sample is referred as the
transmittance.
light transmited through blank value
Measurement of transmission
1. Select method 905.
2. The preset wavelength is displayed. Select the required wavelength using
U
/
U
keys and confirm the selection by pressing
OK
. The selected wavelength is
adjusted.
3. Perform measurement following the instruction of the display.
4. Return to method selection using key
ESC
.