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Is the λmax of phenol in aqueous solution affected by the pH of the solution? Explain.
Capillary puncture
A medical procedure for collecting blood samples by puncturing the capillaries, often done on the fingertip or earlobe, for testing purposes.
Lancet
A small, disposable instrument with a sharp point used to puncture the skin and make a shallow incision; used for capillary puncture.
Retracting needle
A safety syringe design where the needle retracts into the barrel post-injection to prevent needle-stick injuries.
Butterfly needle
A small, winged needle used for accessing veins for blood draws or infusions, minimizing discomfort and tissue damage.
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