If needed, use the safety shower behind the clean area. Have someone contact emergency services. Sample MSDS are posted in the lab for your perusal. Examples of chemical contamination are sodium ions and oils from your skin. Examples of particulate contamination are dust from the air, exfoliated skin, hair, and dandruff.
Humans are the usually the dirtiest objects in a clean room.
Never touch semiconductor specimens, the insides of beakers, the wafer-handling end of tweezers, or photolithographic masks with your fingers. Cleaning Procedures General cleaning procedures for preparing your sample follow. All instruments used, i.e., beakers, tweezers, etc., must be cleaned before being used to clean wafers. Rinse well in DI water. Scrub with Nova Clean diluted in DI water.