Professional insert vial suit for crimp vials
Inserts – Vials | Sigma-Aldrich
Polypropylene inserts are recommended for pH-sensitive samples, greater solvent compatibility, biological samples, and ionic samples becasue of the material′s inertness. Several styles are offered including flat bottom, concial inserts with a top spring or a bottom spring, and concial without springs. Glass inserts are sold in two diameters for 2mL vials; one for standard opening (4.6 mm) vials and another for large opening (6 mm).
crimp vial, crimp vial...