In the television show Call the Midwife, detailing the lives of a group of midwives who live and work in the East End of London in the 1950s and 1960s, the characters frequently refer to using the autoclave. What are the characters talking about?

cleaning equipment through high-pressured elevation in temperature

monitoring the device that cultivates the growth of the mold used to create penicillin

placing used devices in a machine that uses bleaches and corrosive materials, like a dishwasher for medical devices

using a pincer-like device to extract babies during especially difficult childbirths

The characters in Call the Midwife are talking about cleaning equipment through high-pressured elevation in temperature. An autoclave is a device commonly used in medical settings to sterilize instruments by using steam under pressure to kill any microorganisms on the equipment. This ensures that the instruments are safe to use for medical procedures.