10 ml empty glass vials. Sterile. Empty Glass Vials are a clear, sterile glass injection vial that does not contain any water (pyrogen free). Each vial is sterilized with a dry heat process called depyrogenation. This process elimates the need to add a single drop of pyrogen to the vial. Available with several different colored caps for identification. For mixing sterile preparations. (gold colored cap)

Glass Vial Features: 

Many people who are doing HCG weight loss injection treatments require that the pyrogen free water not be in the empty glass vials, as this can effect the mixture.