A mercury dosimeter (SKC Inc., Eighty Four, PA) that can be analyzed in any laboratory equipped with a cold-vapor atomic absorption spectrophotometer (CV-AAS) is commercially available. This mercury dosimeter samples workplace air by diffusion of mercury vapor through polyethylene mesh discs which are located at the face of the badge. The mercury is then collected on a solid sorbent capsule containing approximately 800 mg of Hydrar^® which resides in a plastic housing. The Hydrar^® is analyzed by cold vapor, the capsule is discarded, and the plastic housing, after decontamination, is reusable.