Light fixtures should be specialist clean-room fittings, normally fitted flush to the ceiling. Some particular clean-room designs (e.g., teardrop fittings) can be surface
FIRE RATED GLASS
FLUSH GLAZING FIXED WITH CONTACT ADHESIVE
SILICON SEAL METAL SUB FRAME
BEVELLED EDGE S.S. FRAME PACKING TO SUIT
CLEAN ROOM «ALL FINISH
mounted in nominally clean areas, and be up to ISO Class 8 classification, provided they have a good seal between the base of the light fitting and the ceiling itself.
The diffusers should not be glass (for general safety issues) and must be smooth and easy to clean. The method of maintaining the light and replacing fluorescent tubes must also be considered, together with its implication on the ceiling design as noted in Section 5.4.
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