Standard method for evaluation of air assay media by the monodisperse DOP (dioctyl phthalate) smoke test

Journal Article · Tue Dec 31 23:00:00 EST 1974 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7087023

The DOP (dioctyl phthalate) smoke test is a highly sensitive and reliable technique for measuring the fine particle arresting efficiency of an air or gas cleaning system or device. It is especially useful for evaluating the efficiency of depth filters, membrane filters, and other particle-collecting devices used in air assay work. A monodispersed aerosol of 0.3 ..mu..m diameter is continuously generated by condensation of dioctyl phthalate vapor under controlled conditions. By selective value arrangement, a metered portion of this aerosol is drawn through a specimen mount containing the item under test. Flow rate through the specimen is adjustable and the corresponding flow resistance is noted as part of the test. With aerosol generation stabilized (constant particle size and concentration), aerosol concentration is measured upstream and downstream of the specimen under test by use of a linear forward light-scattering photometer. Results are expressed as percent of DOP penetration at the flow rate used.

• OSTI ID: 7087023
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 26; ISSN ASTSA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
500600 -- Environment
Atmospheric-- Regulations-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR CLEANING SYSTEMS
AIR FILTERS
AIR POLLUTION
COLLOIDS
DISPERSIONS
EFFICIENCY
ENGINEERED SAFETY SYSTEMS
ESTERS
EVALUATION
FILTERS
ORGANIC COMPOUNDS
PHTHALIC ACID ESTERS
POLLUTION
POLLUTION CONTROL EQUIPMENT
SENSITIVITY
SOLS
STANDARDS