It is recommended that you wash the Nalgene bottles by hand. This includes 250 mL Nalgene Bottle w/Lid, order code CO2-BTL, $5 and the BioChamber 250, order code BC-250, $8.
The bottles are made of Polyethylene terephthalate G copolymer (PETG). The maximum temperature the bottle can tolerate is 70 degrees celsius but we do not recommend using the bottles at this temperature.
Melted bottles are not covered under warranty.