Research Report RR:D02-1688
Report RR: D02-1688 presents the results of an interlaboratory study used to establish the precision and bias statement for ASTM D7043, Standard Test Method for Indicating Wear Characteristics of Non-Petroleum and Petroleum Hydraulic Fluids in a Constant Volume Vane Pump. This report uses data from 30 tests of reference fluids from four independent laboratories to demonstrate the repeatability of D7043. A second Interlaboratory Study, which is intended to demonstrate reproducibility, will be concluded in the near future. The laboratories in this study periodically run a reference fluid in order to verify that their D7043 apparatus is functioning properly. Each laboratory maintains a stock of reference fluid, from a single batch, which is compatible with their apparatus and which does not require extensive flushing or rebuilding of their test apparatus prior to the running of a test. Each laboratory determines for themselves which fluid type and formulation best suits their needs. All data from a fifth lab was excluded when it was discovered that their reference fluid was not from a single batch. In addition, a test result from another laboratory was excluded since it fell significantly outside the norm but did correctly uncover a problem with the apparatus which was subsequently identified and corrected.
D7043-17 Standard Test Method for Indicating Wear Characteristics of Non-Petroleum and Petroleum Hydraulic Fluids in a Constant Volume Vane Pump
Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants
Subcommittee D02.N0 on Hydraulic Fluids