What is the function of a Stoddard clamp?

The Stoddard clamp is specifically designed to secure test tubes or similar cylindrical objects. It provides a stable grip, allowing for safe handling and manipulation of test tubes during experiments. This function is essential in laboratory settings where test tubes may contain volatile substances, chemical reactions, or require heating. By securely holding the test tube, the clamp reduces the risk of spills and accidents, ensuring a safer environment for conducting scientific experiments.

The other options do not accurately describe the primary function of a Stoddard clamp. For instance, holding glass slides typically requires a different type of apparatus, such as a slide holder. Storing laboratory chemicals is not a function of any clamp but may involve other storage systems designed to safely contain and organize chemicals. Mixing solutions is usually performed with tools like stir rods or vortex mixers rather than a clamp, which is not intended for direct interaction with solutions.