Flasks are unbreakable, nearly
transparent and non-contaminating. PTFE resists
virtually all chemicals. Withstand temperatures from
-270°C to +205°C. Can be boiled in nitric acid for trace
metals work. Can be autoclaved or chemically sterilized.
With convenient Tefzel* EFTE cap. Before autoclaving,
set cap on top of flask without engaging threads.
