Strang provided mechanical engineering services for the Wisconsin State Laboratory of Hygiene (WSLH), a 78,000 square foot environmental testing laboratory. This facility supports more than ten different laboratory operations, including clinical, environmental and occupational health laboratory services and proficiency testing programs for public and private laboratories. Clinical testing services provided by the lab include: virology, toxicology, serology, microbiology, and cytology testing, among others. 

The mechanical system is designed as a once through ventilation system utilizing variable air volume (VAV) fume hood control and energy reclaim by using air-to-air heat exchangers. The VAV fume hood control valves react to the sash position sensors for maintaining required face velocity of the fume hoods. The laboratory space is maintained negative to the corridor (or other spaces) through CFM totalizing of the supply air and exhaust air volumes within the central building automation system. The exhaust heat from lab equipment, such as gas chromatography equipment, is collected locally using snorkel exhaust drops at each piece of equipment.