Models 2052, 3054, 2062, 2064 and 2067 have wetted parts are made of PTFE and other fluoinated plastics. High flow models are commonly used for scale up operations.
Model 2163 has coated heads for moderate solvent vapors.
Note: Government regulations require Welch to obtain an end-user certificate this product if either used or exported outside of the United States.
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