All needles, syringes and lancets All sharp or pointy hard plastic items, pipettes, tubes and tips All glassware items, glass tubes, vials, bottles, slides, vacutainers, etc. All sharp or pointy metal items, scalpels, knives, razor blades, tweezers, scissors, etc. Rule of thumb: If it can puncture the red bag, it needs to be placed in a sharps container.