Alcohol pre-wetted cleanroom wipes are widely used in cleanrooms, electronics manufacturing, and optical industries where high levels of cleanliness are required. Their quality directly impacts cleaning effectiveness and product safety. Therefore, testing methods for these wipes are essential and typically include the following:
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Liquid Content Measurement
By weighing the wipe before and after drying, the amount of alcohol or cleaning solution is determined. This ensures consistent moisture levels for optimal cleaning. -
Particle Release Testing
Wipes are rubbed on a standard surface inside a clean bench, and a particle counter is used to measure any released particles. This verifies compliance with cleanliness standards like ISO Class 5 (Class 100) or Class 7 (Class 10000). -
Ion Residue Testing
Using conductivity or ion chromatography, the wipe’s potential to leave behind ionic residues such as sodium, potassium, or chloride is measured—critical for avoiding corrosion or contamination of sensitive components. -
Alcohol Concentration Analysis
Gas chromatography is used to confirm the alcohol concentration, typically 70% isopropyl alcohol (IPA) and 30% deionized water. This ensures effective cleaning with quick evaporation and minimal residue. -
Fiber Integrity Testing
Microscopic analysis determines whether the wipe sheds fibers or deteriorates during use, which is crucial for preventing secondary contamination.
These testing methods help verify that alcohol pre-wetted cleanroom wipes meet stringent industry requirements, ensuring safe and effective cleaning in critical environments.