LABEC V-11D - Manual (Page 11)

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Fig. 4-3
5) Press to print the test result；
6) Repeat Step 4) and step 5) to test other unknown concentration samples.
2. Measure the Transmittance
1) Press to choose the mode of “T”（Fig. 4-4） ；
Fig. 4-4
2) Turn the Wavelength Knob to set the wavelength at the point you want；
3) Pull the Reference in the light path，press to calibrate 100%T（Fig. 4-5） ；
Fig. 4-5
4) Pull the Unknown Concentration Sample in the light path, then the value displayed on the
screen is the one you need.（Fig. 4-6） 。