WARNING
Hazardous chemicals or biological agents
. When using hazardous
chemicals or biological agents, make sure that the entire system
has been flushed thoroughly with bacteriostatic solution (e.g., NaOH)
and distilled water before service and maintenance.
CAUTION
Hazardous chemicals or biological agents in UV flow cell
. Make
sure that the entire flow cell has been flushed thoroughly with
bacteriostatic solution (e.g., NaOH) and distilled water, before service
and maintenance.
NOTICE
Keep UV flow cell clean
. Do not allow solutions containing dissolved
salts, proteins or other solid solutes to dry out in the flow cell. Do
not allow particles to enter the flow cell, as damage to the flow cell
may occur.
Cleaning the flow cell
Action
Step
Connect a syringe to the inlet of the flow cell and squirt distilled water
through the cell in small amounts. Then fill the syringe with a 10% surface
active detergent solution like Decon™ 90, Deconex™ 11, RBS™ 25 or equiv-
alent, and squirt five times.
1
After five squirts, leave the detergent solution in the flow cell for at least 20
minutes.
2
Pump the remaining detergent solution through the flow cell.
3
Rinse the syringe and flush the cell with distilled water (10 ml).
4
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Monitor UVis-920 Operating Instructions 29055049 AD
6 Maintenance
6.3 Cleaning the flow cell and optical connectors
