Solvent tube management

A bottle cap for identification of tubing coupled to a solvent container, comprising:

• a lower cap body having an axial opening and a cylindrical wall with threads thereon to engage a threaded portion of a solvent container about an opening in the solvent container,
• wherein the lower cap body is securable to the solvent container;
• an upper cap body attached to the lower cap body and having a cap wall and a base with an opening therein to pass one or more solvent tubes, the upper cap body having at least one attachment feature to secure an identification flag;
• and
• at least one identification flag having an identifier to indicate a solvent conducted through one of the one or more solvent tubes and being removably attachable to the upper cap body at one of the at least one attachment features and having an opening to pass the one of the one or more solvent tubes;
• and
• a liner disposed in the lower cap body and having one or more openings,
• wherein each opening in the liner is configured to pass one of the solvent tubes passed through the opening in the base of the upper cap body.