Materials Characterization Services
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ASTM D4672 – Standard Test Method for Polyurethane Raw Materials: Determination of Water Content of Polyols Description: Significance and Use 5.1 This test method is suitable for quality control, as a specification test, and for research. The water content of a polyol is important since isocyanates react with water. Scope 1.1 This test method measures the water …
ASTM D4662 – Standard Test Methods for Polyurethane Raw Materials: Determination of Acid and Alkalinity Numbers of Polyols Description: Significance and Use 5.1 These test methods are suitable for quality control, as specification tests, and for research. The acid and alkalinity numbers indicate the extent of a reaction with acids. The results are measures of batch-to-batch …
ASTM D4658 – Standard Test Method for Sulfide Ion in Water (Withdrawn 2024) Description: Significance and Use 5.1 Sulfide ion is found in ground waters and wastewater, causing odor and corrosion problems. If acidified, these waters can release hydrogen sulfide, which is extremely toxic even at low levels. This test method provides a means for interference-free …
ASTM D465 – Standard Test Methods for Acid Number of Pine Chemical Products Including Tall Oil and Other Related Products Description: Significance and Use 3.1 These test methods are designed to broaden the scope of the earlier editions of the test method by the inclusion of tall oil and tall oil derived products as test materials …
ASTM D4648 – Standard Test Methods for Laboratory Miniature Vane Shear Test for SaturatedFine-Grained Soil Description: Significance and Use 5.1 The miniature vane shear test may be used to obtain estimates of the undrained shear strength of fine-grained soils. The test provides a rapid determination of the undrained shear strength on undisturbed, or remolded or reconstituted …
ASTM D4647 – Standard Test Methods for Identification and Classification of Dispersive Clay Soils by the Pinhole Test Description: Significance and Use 5.1 The pinhole test provides one method of identifying the dispersive characteristics of clay soils that are to be or have been used in earth construction. The piping failures of a number of homogeneous …
ASTM D4644 – Standard Test Method for Slake Durability of Shales and Other Similar Weak Rocks Description: Significance and Use 5.1 The test method is used to estimate qualitatively the durability of weak rocks through weakening and disintegration resulting from a standard two cycles of wetting and drying in the service environment. (1-7).3 5.2 This test method is …
ASTM D4643 – Standard Test Method for Determination of Water Content of Soil and Rock by Microwave Oven Heating Description: Significance and Use 5.1 The water content of a soil is used throughout geotechnical engineering practice both in the laboratory and in the field. The use of Test Method D2216 for water content determination can be time consuming …
ASTM D4641 – Standard Practice for Calculation of Pore Size Distributions of Catalysts and Catalyst Carriers from Nitrogen Desorption Isotherms Description: Significance and Use 5.1 Pore volume distribution curves obtained from nitrogen sorption isotherms provide one of the best means of characterizing the pore structure in porous catalysts, provided that the limitations of the method are …
ASTM D4637 – Standard Specification for EPDM Sheet Used in Single-Ply Roof Membrane Description: Abstract This specification covers flexible sheet made from ethylene-propylene-diene terpolymer (EPDM) intended for use in single-ply roofing membranes exposed to the weather. The rubber sheet may be non-reinforced (Type I), fabric or scrim internally reinforced (Type II), or fabric-backed (Type III) …
