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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 Injection solution and metal surfaces eg, metal bowls, cannulae and syringes with metal parts.
Solutions showing discolouration and unused portions of solutions from the container should be discarded. Surface sterilisation using pure, undiluted isopropyl alcohol (91%) or 70% ethyl alcohol may be carried out if desired.
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