Clean equipment. Start by wiping down preparation area. Wash hands with soapy water. Wash bottles in hot, soapy water. Rinse thoroughly. Squirt water through hole in teat.
Sterilise equipment. Cover bottle, teat and ring with water and bring to the boil. Boil for five minutes. Or use a microwave, electric or chemical steriliser following directions. Store empty sterilised bottles in a sealed container in fridge.
Be safe. Keep children away from boiling water. To avoid scalding yourself, let equipment cool in the pot until you can touch it. Use sterilised equipment within 24 hours.