Reference

Tyvek and Tychem are both DuPont coveralls, but they fight opposite hazards: Tyvek is a breathable particle barrier and Tychem is a film-coated chemical barrier. Choosing wrong leaves workers exposed under OSHA 1910.132. This guide covers the materials, grade ladders, permeation, breakthrough time, seams, and a worked example.

Disposable coverall types are defined by fabric family and a protective-clothing Type rating, and the wrong combination leaves a worker exposed to dust, splash, or chemical. This guide decodes SMS, microporous, Tyvek, and Tychem under ISO 13688 and the EN Type 1-6 system, explains serged versus taped seams, and walks a lead-abatement spec.