定价： 260元 / 折扣价： 221 元 加购物车

3.1 This test method is intended for use in the determination of the moisture and other volatile matter contained in fats, oils, and fatliquors used in the softening and stuffing of leather, as well as those used in the manufacture of products for such purpose.1.1 This test method covers the determination of moisture and other volatile material under conditions of the test. It is applicable to all fats, oils, and fatliquors used in the softening and stuffing of leather.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 加购物车

定价： 571元 加购物车

定价： 646元 加购物车

5.1 The measurement of particulate matter and collected residue emission rates is an important test method widely used in the practice of air pollution control. Particulate matter measurements after control devices are necessary to determine total emission rates into the atmosphere.5.1.1 These measurements, when approved by national, state, provincial, or other regional agencies, are often required for the purpose of determining compliance with regulations and statutes.5.1.2 The measurements made before and after control devices are often necessary to demonstrate conformance with regulatory or contractual performance specifications.5.2 The collected residue obtained with this test method is also important in characterizing stack emissions. However, the utility of these data is limited unless a chemical analysis of the collected residue is performed.5.3 These measurements also can be used to calibrate continuous particulate emission monitoring systems by correlating the output of the monitoring instruments with the data obtained by using this test method.1.1 This test method2 covers a method for the measurement of particulate matter (dust) concentration in emission gases in the concentrations below 20 mg/m3 standard conditions, with special emphasis around 5 mg/m3.1.2 To meet the requirements of this test method, the particulate sample is weighed to a specified level of accuracy. At low dust concentrations, this is achieved by:1.2.1 Precise and repeatable weighing procedures,1.2.2 Using low tare weight weighing dishes,1.2.3 Extending the sampling time at conventional sampling rates, or1.2.4 Sampling at higher rates at conventional sampling times (high-volume sampling).1.3 This test method differs from Test Method D3685/D3685M by requiring the mass measurement of filter blanks, specifying weighing procedures, and requiring monitoring of the flue gas flow variability over the testing period. It requires that the particulate matter collected on the sample filter have a mass at least five times a positive mass difference on the filter blank. High volume sampling techniques or an extension of the sampling time may be employed to satisfy this requirement. This test method has tightened requirements on sampling temperature fluctuations and isokinetic sampling deviation. This test method has eliminated the in-stack filtration technique.1.4 This test method may be used for calibration of automated monitoring systems (AMS). If the emission gas contains unstable, reactive, or semi-volatile substances, the measurement will depend on the filtration temperature.1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

定价： 646元 加购物车

定价： 927元 加购物车

5.1 The health of workers in many industries is at risk through exposure by inhalation to toxic metals and metalloids. Industrial hygienists and other public health professionals need to determine the effectiveness of measures taken to control workers’ exposures, and this is generally achieved by making workplace air measurements. This test method has been promulgated in order to make available a standard methodology for making valid exposure measurements for a wide range of metals and metalloids that are used in industry. It will be of benefit to agencies concerned with health and safety at work; industrial hygienists and other public health professionals; analytical laboratories; industrial users of metals and metalloids and their workers, and other groups.5.2 This test method specifies a generic method for determination of the mass concentration of metals and metalloids in workplace air using ICP-AES.5.3 The analysis results can be used for the assessment of workplace exposures to metals and metalloids in workplace air.5.4 When sampling and analysis is carried out in accordance with this test method, the overall procedure normally satisfies the performance requirements of ISO 20581.NOTE 2: Refer to Guide E1370 for guidance on the development of appropriate exposure assessment and measurement strategies.1.1 This test method specifies a procedure for collection, sample preparation, and analysis of airborne particulate matter for the content of metals and metalloids using inductively coupled plasma-atomic emission spectrometry (ICP-AES). The method is generally applicable to occupational exposure monitoring.1.2 This test method is applicable to personal sampling of the inhalable or respirable fraction of airborne particles and to area sampling.1.3 This test method should be used by analysts experienced in the use of ICP-AES, the interpretation of spectral and matrix interferences, and procedures for their correction.1.4 This test method specifies a number of alternative methods for preparing test solutions from samples of airborne particulate matter. One of the specified sample preparation methods is applicable to the measurement of soluble metal or metalloid compounds. Other specified methods are applicable to the measurement of total metals and metalloids.1.5 It is the user's responsibility to ensure the validity of this test method for sampling materials of untested matrices.1.6 The following is a non-exclusive list of metals and metalloids for which one or more of the sample dissolution methods specified in this document is applicable. However, there is insufficient information available on the effectiveness of dissolution methods for those elements in italics.Aluminum Indium SodiumAntimony Iron StrontiumArsenic Lead TantalumBarium Lithium TelluriumBeryllium Magnesium ThalliumBismuth Manganese TinBoron Molybdenum TitaniumCadmium Nickel TungstenCalcium Phosphorus UraniumCesium Platinum VanadiumChromium Potassium YttriumCobalt Rhodium ZincCopper Selenium ZirconiumHafnium Silver  1.7 This test method is not applicable to the sampling of elemental mercury, or to inorganic compounds of metals and metalloids that are present in the gaseous or vapor state.1.8 No detailed operating instructions are provided because of differences among various makes and models of suitable ICP-AES instruments. Instead, the analyst shall follow the instructions provided by the manufacturer of the particular instrument. This test method does not address comparative accuracy of different devices or the precision between instruments of the same make and model.1.9 This test method contains notes that are explanatory and are not part of the mandatory requirements of this test method.1.10 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.11 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.12 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 843元 加购物车

定价： 571元 加购物车

2.1 Nonvolatile matter determination is useful as a quality control test, when used in conjunction with other tests, to assure specification compliance.1.1 This test method covers the determination of nonvolatile matter (total solids) in a water-emulsion, organic solvent-based liquid and paste floor polishes, and polymer-emulsion-type floor polishes.1.2 This test method recognizes that the products may contain material that will slowly volatilize or change chemically with a resulting change in weight of the nonvolatile matter. Therefore, since drying to constant weight is impractical, specific drying times have been selected.1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 加购物车

定价： 0元 加购物车

定价： 元 加购物车

定价： 0元 加购物车

定价： 0元 加购物车

定价： 元 加购物车

定价： 0元 加购物车