Prior to sterilization as required in Regulation .03 of this chapter, tweezers and needle caps shall be: Mechanically precleaned as follows: Cleansed with a clean cotton ball or swab moistened with a low-residue detergent and cool water; Accumulated in a holding container by submersion in a low-residue detergent and cool water; and Then, thoroughly rinsed with warm water and drained; Then, cleaned by soaking in a protein-dissolving detergent enzyme cleaner or in an ultrasound cleaning unit according to manufacturer's instructions; and Rinsed and dried.