These include blisters, bottles, vials, ampules, syringes, and cartridges. MDPV containers were found in their vehicle along with spoons, hypodermic syringes and marijuana paraphernalia. Naloxone administered intramuscularly are provided through pre-filled syringes, vials, and auto-injector. They carried a pouch with 14 hypodermic syringes and a supply of potassium chloride. Glass syringes may be sterilized in an autoclave. "Syringe" is a back-formation from "syringes", itself the plural of "syrinx", a musical instrument. The polyethylene construction of these disposable syringes usually makes them rather chemically resistant. Most autoinjectors are one-use, disposable, spring-loaded syringes. He explained that the acid was for disinfecting syringes for injections. "Tuberculin" syringes and types of syringes used to inject insulin are commonly used. There are plastic and glass syringes used for blood gas samples. He used hardened brushes, sticks, and even basting syringes as paint applicators. Their main risk comes from the use and disposal of injection syringes. Today, Luer taper connectors are the standard for syringes in the U.S. However, there are a number of problems inherent in the use of syringes for injection.