Disposable tips for robotic workstations—provide maximum performance, accuracy, and reproducibility in laboratory automation procedures. Available in clear, blue tint, or carbon-black-conductive polypropylene. Carbon-black, liquid-level-sensing tips are required by many automated systems. They are constructed of a highly conductive material that is necessary to detect presence or absence of sufficient liquid, in order to avoid short sampling and excessive submersion of tip during aspiration.