درباره ما
ASTM - ASTM International: Recent submissions
Now showing items 2761-2780 of 39933
-
Standard Practice for Static Headspace Sampling of Vapors from Fire Debris Samples
Abstract: 4.1 This practice is intended for use as a sampling technique within a general scheme for the analysis of ignitable liquids and ignitable liquid residues from fire debris samples in accordance with Guide E3245. 4.2 Headspace ... -
Standard Test Method for Evaluating the Performance of Antimicrobials in or on Polymeric Solids Against Staining by Streptomyces species (A Pink Stain Organism)
Abstract: 5.1 Methods such as Test Method D3273 Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber and Test Method D3274 Standard Test Method for Evaluating the ... -
Standard Test Method for Heat and Visible Smoke Release Rates for Materials and Products Using an Oxygen Consumption Calorimeter
Abstract: 5.1 This test method is used primarily to determine the heat evolved in, or contributed to, a fire involving products of the test material. Also included is a determination of the effective heat of combustion, mass loss ... -
Standard Test Method for Determining Longitudinal Peak Braking Coefficient (PBC) of Paved Surfaces Using Standard Reference Test Tire
Abstract: 5.1 Pavement surfaces have different traction characteristics, depending on many factors. Surface texture, binder content, usage, environmental exposure, and surface conditions (that is, wet, dry) are some of the factors. ... -
Standard Test Methods for Determination of Gold in Bullion by Fire Assay Cupellation Analysis
Abstract: 4.1 These test methods are intended for the determination of the gold content of gold and silver bullion. It is assumed that all who use these test methods are trained assayers capable of performing common fire assay ... -
Standard Test Method for Determination of Moisture Content of Particulate Wood Fuels Using a Microwave Oven
Abstract: 5.1 This test method provides a rapid determination for moisture in particulate wood fuels in several minutes. The standard method, Test Method E871, requires a minimum of 18 h. This method is applicable to situations such ... -
Standard Practice for Electromagnetic (Eddy Current) Examination of Ferromagnetic Cylindrical Bar Product Above the Curie Temperature
Abstract: 5.1 The purpose of this practice is to describe a procedure for in-line-eddy-current examination of hot cylindrical bars in the range of diameters listed in 1.2 for large and repetitive discontinuities that may form during ... -
Standard Practice for Sampling Manufactured Staple Fibers, Sliver, or Tow for Testing
Abstract: 5.1 Assigning a value to any property of the material in a container or in a lot, consignment, or delivery involves a measurement process that includes both sampling and testing procedures. The correctness of the value ... -
Standard Terminology for Nondestructive Examinations
Abstract: 3.1 The terms found in this standard are intended to be used uniformly and consistently in all nondestructive testing standards. The purpose of this standard is to promote a clear understanding and interpretation of the ... -
Standard Test Methods for Flexivity of Thermostat Metals
Abstract: 4.1 These test methods are used for determining response to temperature change or flexivity of thermostat metal. The flexivity is calculated from the temperatures, dimensions of specimen, and the relative movement of the ... -
Standard Practice for Determining Load Resistance of Glass in Buildings
Abstract: 6.1 This practice is used to determine the LR of specified glass types and constructions exposed to uniform lateral loads. 6.2 Use of this practice assumes: 6.2.1 The glass is free of edge damage and is properly glazed. ... -
Standard Test Method for Analysis of Aluminum and Aluminum Alloys by Spark Atomic Emission Spectrometry
Abstract: 5.1 The metallurgical properties of aluminum and its alloys are highly dependent on chemical composition. Precise and accurate analyses are essential to obtaining desired properties, meeting customer specifications, and ... -
Standard Guide for Performance of Chinese Hamster Ovary Cell/Hypoxanthine Guanine Phosphoribosyl Transferase Gene Mutation Assay
Abstract: 2.1 The CHO/HGPRT assay detects forward mutations of the X-linked hypoxanthine-guanine phosphoribosyl transferase (hgprt) locus (coding for the enzyme, HGPRT) in Chinese hamster ovary (CHO) cells. Cells originally derived ... -
Standard Practice for Calculation of Hazard Potential Figures of Merit for Thermally Unstable Materials
Abstract: 5.1 This practice provides nine figures of merit which may be used to estimate the relative thermal hazard of thermally unstable materials. Since numerous assumptions must be made in order to obtain these figures of merit, ... -
Standard Test Method for Determining Specific Heat Capacity by Differential Scanning Calorimetry
Abstract: 5.1 Differential scanning calorimetric measurements provide a rapid, simple method for determining specific heat capacities of materials. 5.2 Specific heat capacities are important for reactor and cooling system design ... -
Standard Practice for Sampling Zooplankton with a Clarke-Bumpus Plankton Sampler
Abstract: 5.1 The advantages of the Clarke-Bumpus plankton sampler are as follows: 5.1.1 It will sample a discrete depth or multiple depths, depending upon the sampling design. 5.1.2 It is a slow to medium speed sampler requiring ... -
Standard Practice for Sampling Zooplankton with Pumps
Abstract: 5.1 The advantages of collecting zooplankton with pumps are as follows: 5.1.1 Sample size is more accurately controlled than with nets. 5.1.2 Discrete samples can be more easily obtained both vertically and horizontally. ... -
Standard Guide for Network Level Pavement Management
Abstract: 4.1 This guide provides network level PMS users with an outline of the basic components of a PMS to ensure the specific system the user selects or develops fulfills the agency needs and requirements. 4.2 This guide may ... -
Standard Practice for Preserving Zooplankton Samples
Abstract: 5.1 Calcium Carbonate (CaCO3) buffered formalin (3 % to 5 %) can be used as a permanent preservative for zooplankton. Lugol’s iodine solution can be used to preserve zooplankton for up to one year. Thirty percent ethanol, ... -
Standard Practice for Rubber—Preparation of Pieces for Test Purposes from Products
Abstract: 4.1 This practice is used when it is necessary to test a product from which specimens cannot be cut directly. Procedures are given for preparing pieces suitable for preparing specimens of the product.