Mixing vial

A method of mixing two chemical agents, the method comprising:

• providing a syringe with a blunt pushrod;
• providing a cartridge, the cartridge comprising:
• a vessel, having distal and proximal ends, the vessel comprising a hollow interior chamber with a neck on the distal end;
• and
• a stopper-piston positioned in a sealing relationship with said neck, said stopper-piston comprising a hollow interior chamber with an open proximal end with a dislodgeable plug positioned in and sealing said open end, and said stopper-piston further comprising a closed, distal end comprising a membrane;
• a cap positioned on said proximal end of said vessel;
• wherein said interior chamber of said vessel comprises a first chemical agent, and said interior chamber of said stopper-piston comprises a second chemical agent;
• inserting the cartridge into the syringe;
• and
• depressing the membrane with the blunt pushrod to dislodge the dislodgeable plug, wherein the dislodgment of the dislodgeable plug mixes the first chemical agent and the second chemical agent.