And today they've got something I can afford, new PDA software for identifying and managing hazmat exposures:
WISER (Wireless Information System for Emergency Responders) is a system designed to assist First Responders in hazardous material incidents. Developed by the National Library of Medicine, WISER provides a wide range of information on hazardous substances, including substance identification support, physical characteristics, human health information, and containment and suppression guidance.
Future versions will have wireless networking capability for coordinated responses. And you can't beat the price (free).