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PFA tweezers are specialized laboratory tools that are made of a material called perfluoroalkoxy (PFA). These tweezers are used in a wide variety of laboratory applications, particularly in chemistry, biology, and materials science.

The primary purpose of PFA tweezers is to handle delicate and sensitive materials that cannot be touched by regular metal tweezers. PFA is a highly inert and non-reactive material, which means that it does not interact with or contaminate the samples that it comes into contact with. This makes PFA tweezers ideal for use with materials that are sensitive to contamination, such as biological samples or semiconductor wafers.

In addition to their non-reactive properties, PFA tweezers are also highly heat-resistant, which allows them to be used in high-temperature applications without melting or deforming. They are also resistant to most chemicals, making them suitable for use with a wide variety of substances.

As for which laboratories use PFA tweezers, they are commonly used in academic and industrial research labs, as well as in quality control and testing facilities. They are particularly useful in the fields of nanotechnology, biotechnology, and electronics, where the handling of delicate and sensitive materials is essential.

Overall, PFA tweezers are a valuable tool for any laboratory that works with delicate and sensitive materials, and their non-reactive and heat-resistant properties make them an essential component of many laboratory workflows.