Sterilizes 6 feeding bottles in 2 minutes The Avent Express Microwave Steam Sterilizer offers the benefits of steam sterilization using the power of your microwave. It sterilizes up to 4 bottles and accessories in less than 7 minutes. Sterilize six baby bottles in just two minutes: imagine what our grandparents would say. The Avent Express II Microwave Sterilizer is a modern-day technological wonder and a joy for most parents, who will do anything for a little peace of mind and a few extra minutes to spare. Using a regular kitchen microwave, this lightweight sterilizer eliminates household bacteria and keeps contents sterile for up to 24 hours. It can be used to sterilize Avent feeding bottles of varying sizes and their nipples, rings, and dome caps, Avent Isis breast pump accessories, via cups and lids, via disposable nursers, and other non-electrical Avent products. Its compact size and ease of use make the sterilizer perfect for traveling, too.