Routine Microscopy – KOH Preparation Demonstration of how to perform a potassium hydroxide or, KOH preparation, for detecting the presence of yeast in a specimen under a microscope. Low Resolution Video Video Transcript Associated Course Routine Microscopy Procedures Related Job Aids Gram Stain Smear Preparation Preparing a Wet Mount KÖH Procedure Routine Microscopy Procedures Laboratory Exercises Facilitator Guide Routine Microscopy – Wet Mount Routine Microscopy – India Ink Routine Microscopy – Gram Stain Procedure Routine Microscopy – Direct Smear Routine Microscopy Procedures Student Laboratory Exercises Job Aid Focusing the Microscope Tags Training Laboratory microscopy microscope slide potassium hydroxide KOH bight-field microscope yeast pseudohyphae