Hi , pre wetted wipers are too small.If you have big cleanrooms more than 10 rooms . You need bigger wipers for squeegees especially wall-floor-ceiling cleaning.But you can use for machine surfaces.

Pre-wetted wipers eliminate at least one problem in the cleanroom. The gloves that are a mandatory part of the gowning procedure prevent tactile feedback from a wiper as a wiper is wetted. This makes it difficult to know how much liquid to dispense onto a wiper from a squirt bottle. The optimum wetting level for wipers is about 50 to 60% of capacity – i.e. about half the amount of liquid that the wiper could hold at saturation. But without getting a feel for the wetting level (and no, it is not permissible to remove gloves in the cleanroom to get that feel), it’s hard to know whether too much or too little liquid is being dispensed onto the wiper. Human nature, being what it is, leads to excessive amounts of liquid dispensed onto the wiper and consequently, over-wetting the wiper. This in turn leads to sub-optimum removal of contaminants from surfaces, since the excess liquid on the wiper just moves the contaminants around. Conversely, too little liquid on the wiper makes it difficult to remove contaminants from surfaces. In a cleanroom, Goldilocks prefers pre-wetted wipers because they’re ”just right” (as far as wetting levels are concerned).