Whether for pharmaceuticals or laboratory solutions, our reusable caps are specifically designed to effectively protect the remaining liquid in opened 3ml vials. These caps help prevent dust, leaks, and evaporation, ensuring the caps stay clean and the contents stay fresh. Compatible with 2ml 3ml 5ml 10ml 30ml vial caps, 2ml 3ml 5ml 10ml 30ml glass injection vials, 2ml 3ml 5ml 10ml 30ml vial boxes, empty injection vials, 2ml 3ml 5ml 10ml 30ml sterile vials, 2ml 3ml 5ml 10ml 30ml bac water for peptides, 2ml 3ml 5ml 10ml 30ml peptide caps, 2ml 3ml 5ml 10ml 30ml peptide caps for vials, 2ml 3ml 5ml 10ml 30ml vial caps covers peptide, 2ml 3ml 5ml 10ml 30ml peptide supplies