LABEC V-11D - Manual (Page 10)

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Close the lid of the compartment and press to calibrate Zero.
5) Calibrate 100%T
Pull the Reference in the light path, press to calibrate 100%T。
6) Print the result
Press the Button of to print the test result.
Measurement
1. Measure the Absorbance
1) Press to choose A mode (Fig.4-1） ；
Fig. 4-1
2) Turn the wavelength knob till it displays the wavelength value you want.
3) Pull the Reference in the light path, press to set 100%T（Fig.4-2） ；
Fig. 4-2
4) Pull the unknown concentration sample in the light path，then record the displayed value
（Fig. 4-3）。