What piece of laboratory equipment can be made of polycarbonate and is clear, such that there is no confusion over reading the meniscus?

• A. Graduated Cylinder
• B. Kjeldahl Flask
• C. Volumetric Flask
• D. Separatory Funnel

Answer: (A)

Reading the level of a liquid with precision relies on seeing the bottom of the meniscus clearly, which is easiest when the container is transparent and has clear graduation marks. A polycarbonate graduated cylinder fits this well: it’s a common clear plastic option designed for measuring liquids, so you can position your eye at the level of the bottom of the meniscus and read the measurement directly from the scale, minimizing parallax errors. The Kjeldahl flask isn’t used for precise volume measurement, so its shape and function don’t support easy meniscus reading. A volumetric flask is designed for a single precise volume and, although clear, its narrow neck and marking style can make detecting the exact point at the mark less intuitive for routine readings. A separatory funnel is used for separating immiscible liquids and isn’t focused on giving an easily readable volume. So, the best choice for clear, easy reading of the meniscus in polycarbonate is the graduated cylinder.