Safety First
Water and Air
Water Treatment
Cleaning Methods
How It Works
100

These wearable barriers are selected for anticipated splash, biological, and chemical hazards.

What is personal protective equipment (PPE)?

100

This term describes the amount of moisture in the air.

What is humidity (or relative humidity)?

100

This membrane treatment reduces contaminants in water.

What is reverse osmosis (RO)?

100

This process removes organic and inorganic material from a device.

What is cleaning?

100

The force of cleaning spray striking an instrument surface has this name.

What is impingement?

200

These practices apply to patient care regardless of whether an infection is known.

What are Standard Precautions?

200

This water category meets requirements for its designated routine washing or rinsing application.

What is utility water?

200

This treatment removes dissolved ions through ion exchange.

What is deionization (DI)?

200

A technician uses hand friction and flushing to remove soil. Name the method.

What is manual cleaning?

200

Tiny bubbles form and collapse in an ultrasonic bath, helping loosen soil. Name the action.

What is cavitation?

300

This waste category requires approved handling because it presents an infectious biological hazard.

What is biohazardous waste?

300

This treated water category must meet specified quality requirements for its intended processing application.

What is critical water?

300

This treatment heats water into vapor and then condenses it.

What is distillation?

300

Specialized equipment performs cleaning instead of relying only on hand cleaning. Name the method.

What is mechanical cleaning?

300

Excess dissolved gas is removed from ultrasonic cleaning solution through this process.

What is degassing?

400

Air moves into a room because its pressure is lower than adjacent spaces. Name this pressure relationship.

What is negative pressure?

400

This approved, filtered air is used for specified device-processing tasks such as drying when permitted by the IFU.

What is instrument air?

400

A technician needs the exact cleaning directions for a specific device. Name the authoritative manufacturer document.

What are the instructions for use (IFU)?

400

This equipment uses sound energy and cavitation to assist soil removal.

What is an ultrasonic cleaner?

400

A validated heat process reduces microorganisms but does not establish sterility. Name it.

What is thermal disinfection?

500

This dedicated area receives and processes soiled devices while remaining separated from clean activities.

What is the decontamination area?

500

A sink says RO. Does that label alone prove the water meets critical-water requirements? Explain.

What is no? RO identifies a treatment method; water quality must be verified for its intended use at the point of use.

500

A metal coating is deposited using an electrical process. Name the process.

What is electroplating?

500

This equipment uses spray action, cleaning chemistry, and validated stages to clean and disinfect compatible items.

What is a washer-disinfector?

500

A student says an ultrasonic cycle makes an instrument sterile. Identify the error and the next processing principle.

What is confusing cleaning with sterilization? Cavitation assists soil removal; the item still needs the required subsequent disinfection or sterilization based on use and its IFU.