CTS Containment systems are designed to provide a safe handling environment for users when working with potent powders.
Unlike a BioSafety Cabinet, the types of substances being handled inside CTS enclosures cannot be neutralised by carrying out a VHP decontamination.
For this reason, the CTS systems are designed to be easy to clean when in use and the HEPA filters are a safe change design.
The filter change activity is a short duration task that when carried out correctly will avoid any contamination to the engineer or the laboratory environment.
The extract and filtration design principle is the same for all CTS open face enclosure systems.
A. The duct exit connection to the enclosure can be safely cleaned from inside the enclosure with the extraction and filtration system operating as normal.
B. The ducting connecting the filter to the enclosure is considered to be contaminated and will be changed out at the same time as the filter
B. The HEPA is encased inside the manifold system and changed out as a single unit.
C. HEPA Filter is located before the fan section so that the FAN extraction is always clean and safe to maintain
D. Extract and Filtration System is separate from the enclosure
Warning
This process must be carried out by a CTS Engineer or a competent trained engineer familiar with the hazards associated with potent powder compounds. Disposable Tyvek Overall Laboratory Glasses Double Gloves FFP3 Mask
Procedure
- Internal of spigot area is cleaned from inside enclosure
2. Loosen duct clip connection
3. Create Sleeve section
4. Fix upper part of sleeve section to the enclosure spigot using tape
5. Gather up sleeve section to upper part of duct
6. Fix lower section of sleeve to duct
7. Loosen duct clip connection
8. Pull duct away
9. Seal sleeve off using cable ties
10. Use to create a tight seal around the sleeve
11. Cut through taped section and seal
12. Repeat with other duct connections that connect to the same filter
13. The filter unit unclips from the main body. Note the filter surface showing is the clean side
14. Place complete filter and duct assembly into a hazard bag for disposal. Make sure waste is double bagged
15. The remaining sleeve section connected to the duct may have some small amount on contaminant if the spigot wasn`t thoroughly cleaned. It is a good idea to wet this section from inside the enclosure before removing and adding a new duct connection
