If not water quality, what? Problem-solving, step by step.
D004866:Equipment Contamination / Q000517:prevention & control*; D004868:Equipment Failure; D019544:Equipment Failure Analysis / Q000379:methods*; D011340:Problem Solving; D013242:Sterilization / Q000295:instrumentation* / Q000379:methods; D013523:Surgical Equipment; D014873:Water Pollutants / Q000032:analysis*
D014873:Water Pollutants