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Local anaesthetics react with certain metals and cause the release of their respective ions which, if injected, may cause severe local irritation. Adequate precautions should be taken to avoid prolonged contact between Xylocaine w/ Adrenaline solution and metal surfaces eg, metal bowls, cannulae and syringes with metal parts.
Solutions showing discolouration and unused portions of solutions from the single dose vial should be discarded. Solutions with adrenaline should not be re-autoclaved.
Surface sterilisation using pure, undiluted isopropyl alcohol (91%) or 70% ethyl alcohol may be carried out, if desired.
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