When using the spray-then-wipe method, apply the disinfectant solution directly onto the surface using a trigger spray bottle, then wipe it to ensure even coverage. This method is best for covering large flat areas. However, relying on the operator to properly spray the right amount of solution or prevent over-spray onto other surfaces can be problematic. Additionally, areas that are difficult to reach or non-flat can benefit from using a foam wiper for better coverage. It’s important to note that when spraying, the solution becomes airborne and can produce volatile organic compounds (VOCs) that may be harmful to humans. Look for safer disinfectants when possible.
The dip-then-wipe method involves saturating a cleanroom wiper in the solution for a ten count and then wringing out any excess solution. While this method offers greater control over solution application, it relies on the user to use the correct amount and may lead to cross-contamination as the wiper is continually saturated.
This technique, known as the bucket method, involves soaking a wiper in a disinfectant solution for several minutes based on the manufacturer’s recommendations before wringing it out and wiping surfaces for effective solution saturation. However, there has been some concern that longer soaking times can reduce antimicrobial activity, and reuse of the wiper can lead to cross-contamination. Users will need to check their disinfectant labeling and wiper compatibility before using this method.
Using Pre-Wet Wipes vs. Sprays
Pre-saturated wipes come in resealable bags or canisters for easy use and consistent solution concentration. Pre-wetted disinfectant wipes save time and ensure precise disinfectant application in controlled environments. The resealable bags or canisters prevent evaporation and waste of the chemistry. While they may cost slightly more than purchasing separate wipes and solutions, they eliminate preparation time and cross-contamination, making them cost-effective. Presaturated wipes eliminate the need for sprayers and reduce VOCs, creating a cleaner environment and reducing staff exposure to chemicals through skin or inhalation.
Proper Cleanroom Wiping
Using the correct wiping technique is essential for proper disinfection, regardless of the application method. Cleanroom wipes are crucial to maintaining the proper ISO or Cleanroom Grade cleanliness levels in critical areas. This poster showcases the correct technique for wiping in a cleanroom.
Berkshire offers a wide range of wiper materials and formats, including custom sizes. Our cleanroom consultants can help you decide on the best options for your application by providing free samples before you make a purchase. We can also ensure that your wipes and disinfectants are compatible with each other, perform for your application, and meet your facility’s SOP.