A RETORT CLAMP is a laboratory apparatus that is used to hold a retort, a piece of glassware used for distillation or other laboratory operations, in place. It consists of two jaws that can be adjusted to fit the size of the retort and a screw that can be tightened or loosened to secure it in place.

The RETORT CLAMP ZINC D/C EXTENSION is a specific type of retort clamp made from zinc, which is durable and corrosion-resistant. It also has a double clamp extension, which allows it to hold larger retorts or other equipment securely in place. This type of clamp is commonly used in chemistry and biology laboratories for various applications.