Wipes and Swabs
Wipes are used in all cleanrooms as one of the main cleaning methods. They are chiefly used to remove the invisible contamination of particles and fibres 50µm and smaller.
Uses include the wiping of surfaces such as bench tops, the cleaning of small pieces of equipment such as bottles or trays, wipe down (or preparation) of items or their outer packaging before being taken into the cleanroom or isolator and glove wiping for cleanroom staff. Wipes may also be needed to absorb and pick up spillages which occur during the production process.
Wipes may be used dry but are much more efficient in removing contamination when dampened with or sanitising solutions.
In all instances wipes for cleanroom use must not introduce significant particulate or fibre contamination into the controlled areas. In a few operations, notably surface finishing, re-usable wipes may be employed which can be re-processed by a cleanroom cleaning and decontamination plant, however the majority of cleanroom wipes are discarded
after a single use.
Wipes are available in a very wide range of materials, presentations and price and so it is important to select the product which will satisfy cleaning requirements in the most efficient and cost effective manner.
The main factors to consider when comparing
cleanroom wipes are;
• Physical properties
• Wiper materials
• Wiper edge finish
• Wiper size, fold and packaging
• Wiper cleanliness and sterility
• Dry or pre-wetted wipes
• Supporting documentation