UL Bulletin

From NFPA Ouarierly, April 1950 UL Bulletin of Research No. 43. 

UL-94 V-0, UL-94 V-1, UL-94 V-2, UL-94 5V, UL-94 HB Flame class ratings following UL Bulletin 94. Typically the (minimum) sample thickness which is sufficient to pass the test is reported. Flammability ratings listed in this chapter are not intended to reflect hazards presented by these or other materials under actual fire conditions. 

Tests for flammability of plastic materials, Underwriters Laboratory Bulletin UL-94, Underwriters Laboratory, Northbrook, IL, 1985, pp. 10-13. 

Polymeric materials - short term property evaluations hot wire ignition, Underwriters Laboratory Bulletin UL-746A, Underwriters Laboratory, Northbrook, IL, 1984, pp. 24-25 (ASTM D3874-97, American Society for Testing and Materials Glow Wire Test (IEC 695-2-1), International Electrotechnical Commission). 

Shimizu, J., Murakami, S., Oishi, T., and Ban, Y. (1971) The Fischer indole synthesis with formic acid. II. The synthesis of hexahydrocyclopent(6) indoles. Chemical Ul Pharmaceutical Bulletin, 19, 2561-2566. 

Blaisdell, F. W., Manson, P. W. (1963). Loss of energy at sharp-edged pipe junctions in water conveyance systems. Technical Bulletin 1283. US Dept. Agriculture Washington DC. Blaisdell, F.W., Anderson, C.L. (1991). Pipe plunge pool energy dissipator. Journal Hydraulic Engineering Ul(iy. 303-323 118(10) 1448-1453. 

At http //www. ul ie/ infopolis/methods/incident html on the Internet, you will find a bulletin on Ergonomics Methods and Tools titled Task Analysis Methods Critical Incident Technique. Note that the authors say utilizing a critical incident system is inexpensive and provides rich information. ... 

Flame retardancy tests were performed following the procedure of Underwriter s Laboratory Bulletin 94 entitled Tests for Flammability of Plastic Materials, UL94. According to this procedure, materials may be classified as HB, VO, VI, V2, VA and/or VB on the basis of the test results obtained for five samples. In this study, UL test was done at 0.8 mm thickness for all samples. Heat deflection Temperature (HDT, ISO 75/Be flat, 1.8 Mpa load) and Vicat softening temperature (Vicat, ISO 306, Vicat B, heating rate 120 °C/min load of 50 N) were used to determine thermal properties of compositions. Standard impact bars were used to measure these properties. Duplicate measurements were done and average of two samples were reported. 

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