Solvent reservoir for use in HPLC mobile phase delivery. The 1000 mL size HPLC solvent bottles are a replacement for use with the Hewlett-Packard model HP-1090 HPLC (HP part number 9301-0656). Outer joint at the top on all sizes is polished, thereby making an excellent seal between the PTFE cap and the bottle. Optional stopper permits convenient storage of solvent. For PTFE stoppers see CG-3002-06.