A zipper tester is a specialized instrument used to test the strength and durability of zippers. The materials that can typically be processed using a zipper tester include:

Zipper materials: This includes the zipper teeth, slider, and tape materials. Zippers can be made from a variety of materials, including plastic, metal, and nylon.

Zipper accessories: Some zipper testers can also test the strength of zipper accessories such as stops or pulls. These accessories are important components of a zipper, and their strength can affect the overall strength and durability of the zipper.

Fabric samples: Zipper strength can also be affected by the fabric that it is attached to. Some zipper testers are equipped with fabric gripping mechanisms that allow for testing of zipper strength on a variety of fabrics.

Overall, a zipper tester is a useful tool for testing the strength and durability of zippers and their components and can be used on a wide range of materials commonly used in the manufacturing of zippers.