Completely disengage threads or remove cap before autoclaving. Nalgene LDPE, HDPE, PP and PMP containers can be used for long-term storage, but direct UV exposure should be avoided.
Nalgene reusable polypropylene(PP) and polypropylene copolymer (PPCO) bottles are designed to last many years under typical laboratory conditions. Yet, as with all durable products, they need to be retired and replaced eventually. These bottles and their packaging are recyclable in many communities. Please recycle the corrugate cartons and LDPE bags in which your Nalgene bottles products are packaged. And at end of product life, please wash and recycle your Nalgene PP and PPCO bottles if services are available in your community.