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Proficiency Analytical Testing (PAT) Program flame sealing option.
SRI Project No. PYU-6348, Chemistry Laboratory, Physical Sciences Division, SRI International, Menlo Park, California, 1984 Oct; :1-18
The design, construction, and testing of a permanent type of flame sealing device to protect the Proficiency Analytical Testing (PAT) samples were described. The apparatus developed provided for rapid flame sealing of charcoal tubes. A special charcoal tube was designed, with charcoal held in place with glass wool and stainless steel springs at both ends. Several batches of charcoal tubes were generated for testing. The tubes were loaded with benzene (71432), toluene (108883), and m-xylene (1330207) and flame sealed. For comparison about 30 regular PAT charcoal tubes were simultaneously generated and capped with the manufacturer's plastic cap. Both were stored at 40 degrees-F until analyzed. Six flame sealed tubes were also shipped to NIOSH to test the durability of the flame sealed ends during mailing. The tubes arrived in Cincinnati in perfect condition and were returned to Menlo Park with no breakage. The authors concluded that the results of the tests were satisfactory.
NIOSH-Contract; Contract-200-83-2603; Analytical-methods; Analytical-chemistry; Chemical-analysis; Sample-preparation; Organic-compounds; Sampling-equipment; Sampling-methods; Laboratory-equipment; Laboratory-testing
71-43-2; 108-88-3; 1330-20-7
Final Contract Report
NTIS Accession No.
SRI Project No. PYU-6348, Chemistry Laboratory, Physical Sciences Division, SRI International, Menlo Park, California
SRI International, Menlo Park, California
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division