Figure 5-5. Absorption Cleaning Pt 3 Clean Tube; Figure 5-6. Absorption Cleaning Pt 4 Clean Window - Thermo Scientific 49iQ Instruction Manual

Thermo Scientific
3. Push a piece of lens paper down the tube using a 1/4-inch piece of
PTFE tubing so as not to damage the tube. Use a cotton swab to clean
the window surfaces through the holes that the tube fits into.
Note Both absorption tubes are identical, so they can be replaced in either
position. Replacement of absorption cells is opposite to that of removal.
Since the 49iQ is a ratio instrument, and cleaning the absorption tubes
does not affect the calibration, it is not necessary to recalibrate the
instrument every time the cells are cleaned.
Figure 5–5. Absorption cleaning pt 3 clean tube
Figure 5–6. Absorption cleaning pt 4 clean window
Maintenance
Optical Bench Cleaning
▲
49iQ Instruction Manual 5-7