HHE Report No. HETA-84-392-1597, Syntex Dental Products, Inc., Audubon, Pennsylvania.
NIOSH 1985 Jun:17 pages
Environmental and breathing zone samples were analyzed for carbon- dioxide (124389), formaldehyde (50000), mercury (7439976), bacteria, and fungi at Syntex Dental Products, Incorporated (SIC-5086), Audubon, Pennsylvania in July and August, 1984, and January, 1985. A confidential evaluation was requested because of prolonged employee complaints of eye and respiratory irritation. Ventilation rates and relative humidity of the indoor air were measured. All chemical exposures were below their relevant standards or non detectable. Carpet and air filter samples contained up to 11,000 bacteria per gram and 960 fungi per gram. There are no federal standards for microorganism aerosols. The amount of outside air supplied by air handling units that were tested ranged from 8 to 63 percent. Indoor relative humidities ranged from 63 to 90 percent. The author concludes that chemical exposures at the facility are not exceeding the OSHA standards. There is a possibility that certain susceptible individuals may be affected by the high relative humidity, lack of outside air, and microorganisms. The author recommends increasing the supply of outside air to the ventilation system, maintaining relative humidity at about 50 percent, and treating microorganism infested materials with proprietary biocides.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazards-Unconfirmed; Dentistry; Region-3; Analytical-models; Biological-effects; Dental-materials; Dental-health; HETA-84-392-1597;
124-38-9; 50-00-0; 7439-97-6;
Hazard Evaluation and Technical Assistance;
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-84-392-1597, 17 pages, 16 references