SPECTRONIC 200E USER GUIDE
OD600 Mode for Cell Growth Measurements
30
SPECTRONIC 200E User Guide
Thermo Scientific
3. Once you have selected the preferred measurement mode, press
to highlight
GO
and
press .
Figure 47.
• If you select
Direct
or
Corrected to SPEC 20
measurement mode you will proceed
directly to the blank measurement screen. (
• If you select
User Entered Factor
measurement mode, an intermediate screen
) appears for you to enter the desired factor. Follow the on-screen
directions.
Figure 48.
4. Use a clean test-tube or cuvette containing a solution of your broth/media without
bacteria to record the blank measurement.
5. Use identical tubes or cuvettes to measure your samples.
The center of the light beam is 15 mm above the base of the test tube so you should have
at least 20 mm of sample in the tube.