ASTM D7647-24 pdf download,Standard Test Method for Automatic Particle Counting of Lubricating and Hydraulic Fluids Using Dilution Techniques to Eliminate the Contribution of Water and Interfering Soft Particles by Light Extinction. This test procedure is designed to assess the particle concentration and the distribution of particle sizes in both new and operational oils intended for lubrication and hydraulic applications. The particles under consideration fall within the size range of 4 µm (c) to 200 µm (c), with the upper boundary of this range varying depending on the type of automatic particle counter employed. Note 1: In the context of this...