Research Report Approved: Aug 07, 2012
RR:D02-1744

D7346-Test Method for No Flow Point and Pour Point of Petroleum Products and Liquid Fuels

At the December 2010 meeting of D02.07.D task group (TG 32) was formed to establish the precision of the 3C results from D7346 Test method for No Flow Point of Petroleum Products and the relative bias these results might have compared to D97 Test Method for Pour Point of Petroleum Products. D7346 determines the No Flow Point with a resolution of 0.1C and can round that temperature to the next warmer 3C interval. Other Pour Point test methods similarly determine first the No Flow Point, then report the temperature found 3C warmer. An interlaboratory test program was designed and presented to D02.07.D which eventually consisted of 12 laboratories participating using D7346, and 12 laboratories participating using D97. As in most ILS, not all of the participating laboratories returned data resulting in a final total of 11 laboratories for D7346 and 10 laboratories for D97. The samples that were included consisted of; 6 fuels, 5 base oils (mineral and synthetic), and 9 finished lubricants (mineral and synthetic) covering the expected Pour Point range of +15 to - 60C. The samples were obtained from 7 different suppliers. The samples were shipped as blind duplicates and coded such that the duplicate sample was unknown.
Price: $98.00
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Developed by Subcommittee: D02.07
Stock # : RR-D02-1744
Standard: D7346