ISO 11007-1-2021 pdf download

ISO 11007-1-2021 pdf download.Petroleum products and lubricants – Determination of rust-prevention characteristics of lubricating greases – Part 1: Dynamic wet conditions. 7.3 Test fluid, use one of the following types: a) water conforming to grade 2 of Iso 3696, or b) synthetic sea water conforming to the specification given in ISO 7120, or c) a 0,5 mol/l solution of sodium chloride prepared using water conforming to grade 2 of ISO 3696. at a pH of 8,0 to 8,2, by titration with sodium hydroxide solution. NOTE Water quality of water used as a test fluid is critical and therefore is a different grade from that specified in 22. Other water types may be used in this test, although the precision when using other water types has not been determined. It is recommended that the pH of other water types is determined before use. 7.4 Propan-2-ol. 7.5 Ammonia solution, 3,2 % (rn/rn) (1,65 mol/l). NOTE The ammonia solution is equivalent to a tenfold dilution of 35 % ammonia solution (p = 880 kg/rn3) with water conforming to grade 3 of ISO 3696. This ammonia concentration is critical to the results of the test. 7.6 Solvent rinse solution, consisting of nine volumes of propan-2-ol (ZA) mixed with one volume of ammonia solution (7). 7.7 Silver nitrate solution, 0.1 mol/L 8 Preparation of the apparatus 8.1 Remove all traces of grease from previous tests by wiping the plummer blocks housing (see Al). Wash the plummer blocks housing and all other parts in solvent rinse solution (2.6) followed by water (72). Dry thoroughly using a cloth (6.2). Where previous tests have been carried out with either synthetic sea water [za.b)J or salt water [Z.3.c)J, pour a few drops of silver nitrate solution (21) into the plummer-block. Withdraw a sample of the silver nitrate solution using a clean pipette, and inspect for milkiness or a white precipitate. If a white precipitate appears, rinse the plummer-block with hot water (2.2) and repeat this washing until a withdrawn sample is clear. 8.2 Wear protective gloves (6.8) or use tweezers (6.6) for all subsequent handling. Do not touch the bearings with bare fingers. Use two new bearings for each test. 8.3 Number the bearings on the outside diameter of the outer ring but do not use acid etching. A “vibro penn or etching marker may be used. 8.4 Wash the bearings in wash solvent (71) at 50 °C to...