Screw thread graduated bottles come assembled with autoclavable closures.

• All bottles feature a large white marking spot

Choose from closures that are black phenolic 14-B white rubber-lined, black phenolic PTFE-faced 14-B white rubber-lined, or black polypropylene welded to a PTFE/silicone liner. The PTFE/silicone liner eliminates the possibility of glue contamination to bottle contents.