N04 基础标准与通用方法 标准查询与下载

ASTM F2277-03 选择强度设备的设计和性能特征评定的标准试验方法

The purpose of these test methods is to provide valid and repeatable test methods for the evaluation of selectorized strength equipment assembled and maintained according to the manufacturerrsquo;specifications. Use of these test methods in conjunction with Specification F 2216 is intended to maximize the reliability of selectorized strength equipment design and reduce the risk of serious injury resulting from design deficiencies.1.1 These test methods specify procedures and apparatus used for testing and evaluating selectorized strength equipment for compliance to Specification F 2216. Both design and operational parameters will be evaluated. Where possible and applicable, accepted test methods from other recognized bodies will be used and referenced.1.2 RequirementsSelectorized strength equipment is to be tested for all of the following parameters:1.2.1 Stability,1.2.2 Edge and corner sharpness,1.2.3 Tube ends,1.2.4 Weight stack travel,1.2.5 Weight stack selector pin retention,1.2.6 Function of adjustments and locking mechanisms,1.2.7 Handgrip design and retention,1.2.8 Assist mechanisms,1.2.9 Foot supports,1.2.10 Rope and belt systems:Static load,End fitting design,1.2.11 Chain drive design,1.2.12 Pulley design:Rope pulley design,Belt pulley design,1.2.13 Entrapment zones,1.2.14 Pull in points,1.2.15 Weight stack enclosure design,1.2.16 Loading and deflection:Intrinsic loading and associated deflection,Extrinsic loading and associated deflection,Endurance loading, and1.2.17 Documentation and warnings verification.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 and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Methods for Evaluating Design and Performance Characteristics of Selectorized Strength Equipment

ASTM E2253-03 差示扫描量热计的焓测量有效性的标准方法

1.1 This standard provides procedures for validating enthalpic measurements of differential scanning calorimeters (DSC) and analytical methods based upon the measurement of enthalpy or heat by DSC. Performance parameters determined include calorimetric repeatability (precision), detection limit, quantitation limit, linearity and bias. This method is applicable to both exothermic and endothermic events.1.2 Validation of apparatus performance and analytical methods is requested or required for quality initiatives or where results may be used for legal purposes.1.3 SI units are the standard.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 and health practices and determine the applicability of regulatory limitations prior to use.

Standard Method for Enthalpy Measurement Validation of Differential Scanning Calorimeters

ASTM D6850-03(2008) 水中筛选法的质量控制标准指南

Screening methods are often used to determine the presence or absence of a specific analyte, groups of analytes, classes of compounds or other indicators of chemical compounds in order to determine if further analysis or action is necessary. The determination whether to proceed with further action is useful in reducing the number of negative results for which the screening method serves as a surrogate. The use of screening methods, whether to generate qualitative or semi-quantitative results, is increasingly becoming a useful tool for regulatory monitoring, process control, and site characterization. The appropriate use of a screening method, or any other method for that matter, is dependent upon the Data Quality Objectives (DQOs) that are defined by the user of the data. Persons responsible for assessing the quality of the data generated by the use of screening methods should have detailed Quality Control guidelines by which to assess data quality.1.1 This guide covers general considerations for the Quality Control practices for use with screening methods for organic and inorganic constituents in water. Methods are provided by various standard setting bodies, governmental agencies, as well as many domestic and international manufacturers. 1.2 This guide provides general QC procedures that are applicable to a broad range of screening methodologies. These procedures help to ensure the quality of data that is generated. Additional, method-specific or project specific requirements may be necessary. This guide also includes general considerations regarding proper utilization of screening methods.

Standard Guide for QC of Screening Methods in Water

ASTM E2046-03 用热分析法测定反应感应时间的标准试验方法

This test method measures the time to extrapolated onset of an exothermic reaction under constant temperature (isothermal) conditions for reactions which have an induction period, for example, those which are catalytic or autocatalytic in nature or which contain reaction inhibitors. The RIT determined by this test method is to be considered an index measurement that is useful for comparing one material to another at the test temperature of interest and in the same apparatus type only. This test method is a useful adjunct to dynamic thermal tests, such as Test Method E 537, which are performed under conditions in which the sample temperature is increased continuously at constant rate. Results obtained under dynamic test conditions may result in higher estimates of temperature at which an exothermic reaction initiates because the detected onset temperature is dependent upon the heating rate and because dynamic methods allow insufficient time for autocatalytic reactions to measurably affect the onset temperature. RIT values determined under a series of isothermal test conditions may be plotted as their logarithm versus the reciprocal of the absolute temperature to produce a plot, the slope of which is proportional to the activation energy of the reaction as described in Test Method E 2070. This test method may be used in research and development, manufacturing, process and quality control, and regulatory compliance. This test method is similar to that for Oxidation Induction Time (OIT) (for example, Specification D 3350 and Test Methods D 3895, D 4565, D 5483, D 6186, and E 1858) where the time to the oxidation reaction under isothermal test conditions is measured. The OIT test method measures the presence of antioxidant packages and is a relative measurement of a materialrsquo;resistance to oxidation.1.1 This test method describes the measurement of Reaction Induction Time (RIT) of chemical materials that undergo exothermic reactions with an induction period. The techniques and apparatus described may be used for solids, liquids, or slurries of chemical substances. The temperature range covered by this test method is typically from ambient to 400C. This range may be extended depending upon the apparatus used.1.2 The RIT is a relative index value, not an absolute thermodynamic property. As an index value, the RIT value may change depending upon experimental conditions. A comparison of RIT values may be made only for materials tested under similar conditions of apparatus, specimen size, and so forth. Furthermore, the RIT value may not predict behavior of large quantities of material.1.3 The RIT shall not be used by itself to establish a safe operating temperature. It may be used in conjunction with other test methods (for example, E 487, E 537, and E 1981 as part of a hazard analysis of a particular operation.1.4 This test method may be used for RIT values greater than 15 min (as relative imprecision increases at shorter periods).1.5 This test method is used to study catalytic and autocatalytic reactions. These reactions depend upon time as well as temperature. Such reactions are often studied by fixing one experimental parameter (that is, time or temperature) and then measuring the other parameter (that is, temperature or time). This test method measures time to reaction onset detection under isothermal conditions. It is related to Test Method E 487 that measures detected reaction onset temperature under constant time conditions1.6 SI units are the standard.1.7 There is no ISO standard equivalent to this test method. 1.8 This standard does not purport to address all of the safety ......

Standard Test Method for Reaction Induction Time by Thermal Analysis

ASTM E1026-03 弗里克基准剂量测定系统使用的标准实施规范

1.1 This practice covers the procedures for preparation, testing and using the acidic aqueous ferrous ammonium sulfate solution dosimetry system to measure absorbed dose to water when exposed to ionizing radiation. The system consists of a dosimeter and appropriate analytical instrumentation. The system will be referred to as the Fricke system. It is classified as a reference-standard dosimetry system (see ISO/ASTM 51261).1.2 The practice describes the spectrophotometric analysis procedures for the Fricke dosimeter.1.3 This practice applies only to gamma rays, x-rays (bremsstrahlung), and high-energy electrons.1.4 This practice applies provided the following are satisfied:1.4.1 The absorbed dose range shall be from 20 to 400 Gy (1.1.4.2 The absorbed-dose rate does not exceed 10 6 Gys1 (2).1.4.3 For radioisotope gamma-ray sources, the initial photon energy is greater than 0.6 MeV. For x-rays (bremsstrahlung), the initial energy of the electrons used to produce the photons is equal to or greater than 2 MeV. For electron beams, the initial electron energy is greater than 8 MeV (see ICRU Reports 34 and 35). Note 18212;The lower energy limits given are appropriate for a cylindrical dosimeter ampoule of 12-mm outside diameter. Corrections for dose gradients across an ampoule of that diameter or less are not required.1.4.4 The irradiation temperature of the dosimeter should be within the range of 10 to 60176;C.1.5 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.

Standard Practice for Using the Fricke Reference Standard Dosimetry System

ASTM E2281-03 工艺和测量能力指数的标准规程

1.1 This practice provides guidance for the use of capability indices for evaluating process capability and performance. Process capability indices compare the variability of a process quality measure against product specifications or tolerances and assume the process is in a state of statistical control. Process performance indices are useful in situations when the process is not in a state of statistical control.

Standard Practice for Process and Measurement Capability Indices

ASTM E2281-03e1 工艺和测量能力指数的标准规程

1.1 This practice provides guidance for the use of capability indices for evaluating process capability and performance. Process capability indices compare the variability of a process quality measure against product specifications or tolerances and assume the process is in a state of statistical control. Process performance indices are useful in situations when the process is not in a state of statistical control.

Standard Practice for Process and Measurement Capability Indices

ASTM F2277-03(2010) 对选定的强力设备的设计和性能特征进行评定的试验方法

The purpose of these test methods is to provide valid and repeatable test methods for the evaluation of selectorized strength equipment assembled and maintained according to the manufacturer''s specifications. Use of these test methods in conjunction with Specification F2216 is intended to maximize the reliability of selectorized strength equipment design and reduce the risk of serious injury resulting from design deficiencies.1.1 These test methods specify procedures and apparatus used for testing and evaluating selectorized strength equipment for compliance to Specification F2216. Both design and operational parameters will be evaluated. Where possible and applicable, accepted test methods from other recognized bodies will be used and referenced. 1.2 Requirements8212;Selectorized strength equipment is to be tested for all of the following parameters: 1.2.1 Stability, 1.2.2 Edge and corner sharpness, 1.2.3 Tube ends, 1.2.4 Weight stack travel, 1.2.5 Weight stack selector pin retention, 1.2.6 Function of adjustments and locking mechanisms, 1.2.7 Handgrip design and retention, 1.2.8 Assist mechanisms, 1.2.9 Foot supports, 1.2.10 Rope and belt systems: 1.2.10.1 Static load, 1.2.10.2 End fitting design, 1.2.11 Chain drive design, 1.2.12 Pulley design: 1.2.12.1 Rope pulley design, 1.2.12.2 Belt pulley design, 1.2.13 Entrapment zones, 1.2.14 Pull in points, 1.2.15 Weight stack enclosure design, 1.2.16 Loading and deflection: 1.2.16.1 Intrinsic loading and associated deflection, 1.2.16.2 Extrinsic loading and associated deflection, 1.2.16.3 Endurance loading, and 1.2.17 Documentation and warnings verification. 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 and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Methods for Evaluating Design and Performance Characteristics of Selectorized Strength Equipment

ASTM E4-03 试验机的负荷检定的标准实施规范

1.1 These practices cover procedures for the force verification, by means of standard calibration devices, of tension or compression, or both, static or quasi-static testing machines (which may, or may not, have force-indicating systems). These practices are not intended to be complete purchase specifications for testing machines. Testing machines may be verified by one of the three following methods or combination thereof:1.1.1 Use of standard weights,1.1.2 Use of equal-arm balances and standard weights, or1.1.3 Use of elastic calibration devices. Note 18212;These practices do not cover the verification of all types of testing machines designed to measure forces, for example, the constant-rate-of-loading type which operates on the inclined-plane principle. This type of machine may be verified as directed in the applicable appendix of Specification D 76.1.2 The procedures of 1.1.1-1.1.3 apply to the verification of the force-indicating systems associated with the testing machine, such as a scale, dial, marked or unmarked recorder chart, digital display, etc. In all cases the buyer/owner/user must designate the force-indicating system(s) to be verified and included in the report.1.3 Since conversion factors are not required in this practice, either inch-pound units, SI units, or metric values can be used as the standard.1.4 Forces indicated on displays/printouts of testing machine data systems8212;be they instantaneous, delayed, stored, or retransmitted8212which are verified with provision of 1.1.1, 1.1.2, or 1.1.3, and are within the 177; % accuracy requirement, comply with Practices E4.1.5 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 application of regulatory limitation prior to use.

Standard Practices for Force Verification of Testing Machines

ASTM D6850-03 水中筛选法的质量控制(QC)用标准指南

1.1 This guide covers general consideration for the Quality Control practices for use with screening methods for organic and inorganic constituents in water. Methods are provided by various standard setting bodies, governmental agencies, as well as many domestic and international manufactures.1.2 This guide provides general QC procedures that are applicable to a broad range of screening methodologies. These procedures help to ensure the quality of data that is generated. Additional, method-specific or project specific requirements may be necessary. This guide also includes general considerations regarding proper utilization of screening methods.

Standard Guide for QC of Screening Methods in Water

ASTM D6091-03 可忽略校准误差的分析方法用99%/95%实验室间检测评估的标准实施规范

1.1 This practice establishes a standard for computing a 99 %/95 % Interlaboratory Detection Estimate (IDE) and provides guidance concerning the appropriate use and application. 1.2 The IDE is computed to be the lowest concentration at which there is 90 % confidence that a single measurement from a laboratory selected from the population of qualified laboratories represented in an interlaboratory study will have a true detection probability of at least 95 % and a true nondetection probability of at least 99 % (when measuring a blank sample). 1.3 The fundamental assumption of the collaborative study is that the media tested, the concentrations tested, and the protocol followed in the study provide a representative and fair evaluation of the scope and applicability of the test method as written. When properly applied, the IDE procedure ensures that the 99 %/95 % IDE has the following properties: 1.3.1 Routinely Achievable IDE Value-Most laboratories are able to attain the IDE detection performance in routine analyses, using a standard measurement system, at reasonable cost. This property is needed for a detection limit to be practically feasible. Representative laboratories must be included in the data to calculate the IDE. 1.3.2 Routine Sources of Error Accounted for-The IDE should realistically include sources of bias and variation which are common to the measurement process. These sources include, but are not limited to: instrinsic instrument noise, some typical amount of carryover error, plus differences in laboratories, analysts, sample preparation, and instruments. 1.3.3 Avoidable Sources of Error Excluded- The IDE should realistically exclude avoidable sources of bias and variation, that is, those which can reasonably be avoided in routine field measurements. Avoidable sources would include, but are not limited to: modification to the sample, measurement procedure, or measurement equipment of the validated method, and gross and easily discernable transcription errors (provided there was a way to detect and either correct or eliminate them). 1.3.4 Low Probability of False Detection-The IDE is a true concentration consistent with a measured concentration threshold (critical measured value) that will provide a high probability, 99 %, of true nondetection (a low probability of false detection, alpha = 1 %). Thus, when measuring a blank sample, the probability of not detecting the analyte would be 99 %. To be useful, this must be demonstrated for the particular matrix being use, and not just for reagent water. 1.3.5 Low Probability of False Nondetection- The IDE should be a true concentration at which there is a high probability, at least 95 %, of true detection (a low probability of false nondetection, beta = 5 %, at the IDE), with a simultaneous low probability of false detection (see 1.3.4). Thus, when measuring a sample at the IDE, the probability of detection would be at least 95 %. To be useful, this must be demonstrated for the particular matrix being used, and not just for reagent water. Note 1-The referenced probabilities, alpha and beta, are key parameters for risk-based assessment of a detection limit. 1.4 The IDE applies to measurement methods for which calibration error is minor relative to other sources, such as when the dominant source of variation is one of the following (with comment): 1.4.1 Sample Preparation, and calibration standards do not have to go through sample preparation. 1.4.2 Differences in Analysis, and analysts have little opportunity to affect calibration results (such as with automated calibration). 1.4.3 Differences in Laboratories, for whatever reasons, perhaps difficult to identify and elimate. 1.4.4 Differences in Instruments (measurement equipment), which could take the form of differences in manufacturer, model, hardware, electronics, sampling rate, chemical processing rate, integration t......

Standard Practice for 99 %/95 % Interlaboratory Detection Estimate (IDE) for Analytical Methods with Negligible Calibration Error

ASTM D6512-03 实验室间数值预测的标准规程

1.1 This practice establishes a uniform standard for computing the interlaboratory quantitation estimate associated with Z % relative standard deviation (referred to herein as IQEZ %), and provides guidance concerning the appropriate use and application.1.2 IQEZ % is computed to be the lowest concentration for which a single measurement from a laboratory selected from the population of qualified laboratories represented in an interlaboratory study will have an estimated Z % relative standard deviation (Z % RSD, based on interlaboratory standard deviation), where Z is typically an integer multiple of 10, such as 10, 20, or 30, but Z can be less than 10. The IQE10 % is consistent with the quantitation approaches of Currie (1) and Oppenheimer, et al (2).1.3 The fundamental assumption of the collaborative study is that the media tested, the concentrations tested, and the protocol followed in the study provide a representative and fair evaluation of the scope and applicability of the test method as written. Properly applied, the IQE procedure ensures that the IQE has the following properties:1.3.1 Routinely Achievable IQE Value8212;Most laboratories are able to attain the IQE quantitation performance in routine analyses, using a standard measurement system, at reasonable cost. This property is needed for a quantitation limit to be feasible in practical situations. Representative laboratories must be included in the data to calculate the IQE.1.3.2 Accounting for Routine Sources of Error8212;The IQE should realistically include sources of bias and variation that are common to the measurement process. These sources include, but are not limited to: intrinsic instrument noise, some "typical" amount of carryover error; plus differences in laboratories, analysts, sample preparation, and instruments.1.3.3 Avoidable Sources of Error Excluded8212;The IQE should realistically exclude avoidable sources of bias and variation; that is, those sources that can reasonably be avoided in routine field measurements. Avoidable sources would include, but are not limited to: modifications to the sample; modifications to the measurement procedure; modifications to the measurement equipment of the validated method, and gross and easily discernible transcription errors, provided there was a way to detect and either correct or eliminate them.1.4 The IQE applies to measurement methods for which calibration error is minor relative to other sources, such as when the dominant source of variation is one of the following:1.4.1 Sample Preparationand calibration standards do not have to go through sample preparation.1.4.2 Differences in Analystsand analysts have little opportunity to affect calibration results (as is the case with automated calibration).1.4.3 Differences in Laboratories(for whatever reasons), perhaps difficult to identify and eliminate.1.4.4 Differences in Instruments(measurement equipment), such as differences in manufacturer, model, hardware, electronics, sampling rate, chemical processing rate, integration time, software algorithms, internal signal processing and thresholds, effective sample volume, and contamination level.1.5 Data Quality Objectives8212;Typically, one would compute the lowest % RSD possible for any given dataset for a particular method. Thus, if possible, IQE10 % would be computed. If the data indicated that the method was too noisy, one might have to compute instead IQE20 %, or possibly IQE 30 %. In any case, an IQE with a higher % RSD level (such as IQE50 %) would not be considered, though an IQE with RSD 10 % (such as IQE1 %) would be acceptable. The appropriate level of % RSD may depend on the intended use of the IQE.

Standard Practice for Interlaboratory Quantitation Estimate

ASTM D6956-03 证明与评估化学分析测量系统是否提供了其应有的分析结果的标准指南

1.1 This guide describes an approach for demonstrating the quality of analytical chemical measurement results from the application of a measurement system (that is, method or sequence of methods) to the analysis of environmental samples of soil, water, air, or waste. The purpose of such measurements can include demonstrating compliance with a regulatory limit, determining whether a site is contaminated above some specified level, or determining treatment process efficacy.1.2 This guide describes a procedure that can be used to assess a measurement system used to generate analytical results for a specific purpose. Users and reviewers of the analytical results can determine, with a known level of confidence, if they meet the quality requirements and are suitable for the intended use.1.3 This protocol does not address the general components of laboratory quality systems necessary to ensure the overall quality of laboratory operations. For such systems, the user is referred to International Standards Organization (ISO) Standard 17025 or the National Environmental Laboratory Accreditation Conference (NELAC) laboratory accreditation standards.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 and health practices and determine the applicability of regulatory requirements prior to use.

Standard Guide for Demonstrating and Assessing Whether a Chemical Analytical Measurement System Provides Analytical Results Consistent with Their Intended Use

ASTM E2254-03 动态机械分析仪存储模数校正的标准试验方法

This test method calibrates or demonstrates conformity of a dynamic mechanical analyzer at an isothermal temperature within the range of -100 to 300 °C. Dynamic mechanical analysis experiments often use temperature ramps. This method does not address the effect of that change in temperature on the storage modulus. A calibration factor may be required to obtain corrected storage modulus values. This method may be used in research and development, specification acceptance, and quality control or assurance.1.1 This test method describes the calibration or performance confirmation for the storage modulus scale of a commercial or custom built dynamic mechanical analyzer (DMA) over the temperature range of -100 to 3008212;C using reference materials in the range of 1 to 200 GPa.1.2 Electronic instrumentation or automatic data analysis systems or treatments equivalent to this test method may be used.1.3 SI units are the standard.1.4 There is no ISO standard equivalent to this test method.1.5 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.

Standard Test Method for Storage Modulus Calibration of Dynamic Mechanical Analyzers

ASTM F2216-03 可选强度设备标准规范

1.1 This standard establishes guidelines for the design and manufacture of selectorized strength equipment as defined in 3.1.3, 3.1.16, and 3.1.29.1.2 This standard shall be used with its accompanying test method, Test Method for Evaluating Design and Performance Characteristics of Selectorized Strength Equipment.1.3 The values stated in SI units are to be regarded as the standard. The values 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 and health practices and determine the applicability of regulatory limitations prior to use.

Standard Specification for Selectorized Strength Equipment

DIN V 12900-5:2002 实验室数据通信.第5部分:处理字段总线(PROFIBUS)-PA设备外形

The standard descibes the data communication between laboratory apparatus and computer performed with multipoint connections via a PROFIBUS according to DIN EN 50170/2. The specified device profiles are specific for the PROFIBUS-PA and fit into the OSI Basic Reference Model according to ISO/IEC 7498-1 over layer 7. They have been derived by mapping of the non-bus-specific device profiles in DIN V 12900-3.

Laboratory data communication - Part 5: Device profiles for PROFIBUS-PA

DIN V 12900-4:2002 实验室数据通信.第4部分:DIN测量总线设备外形

Laboratory data communication - Part 4: Device profiles for DIN-measurement-bus

AIR FORCE MIL-DTL-83352 D-2002 A/P25S-5A型遇难人员信号包

This specification covers the performance requirements for one type of airborne personnel distress signal kit designated A/P25S-5A and consisting of a hand-fired launcher and a bandoleer assembly containing seven red signals.

SIGNAL KIT, PERSONNEL, DISTRESS, A/P25S-5A

ASTM E237-02(2012) 实验室微量容器 (量瓶和离心管) 的标准规范

1.1 This specification covers volumetric flasks and four types of centrifuge tubes, widely used in microchemistry. Note 1???Specifications for several items listed below were developed by the Committee on Microchemical Apparatus, Division of Analytical Chemistry, American Chemical Society.2 1.2 Product with a stated capacity not listed in this standard may be specified Class A tolerance when product conforms to the tolerance range of the next smaller volumetric standard product listed in Table 1. TABLE 1 Volumetric Flask (see Fig. 1) Style Capacity, mL Class A/ Tolerance, ?? mL A, ID, max/mm B, ID, ref/mm C, max/mm D, max/mm Stopper No. I 1 0.010 5.3

Standard Specification for Laboratory Glass Microvolumetric Vessels (Volumetric Flasks and Centrifuge Tubes)

ASTM E1750-02 水三相点瓶使用标准指南

This guide describes a procedure for placing a water triple-point cell in service and for using it as a reference temperature in thermometer calibration. The reference temperature attained is that of a fundamental state of pure water, the equilibrium between coexisting solid, liquid, and vapor phases. The cell is subject to qualification but not to calibration. The cell may be qualified as capable of representing the fundamental state (see 4.2) by comparison with a bank of similar qualified cells of known history, and it may be so qualified and the qualification documented by its manufacturer. The temperature to be attributed to a qualified water triple-point cell is exactly 273.16 K on the ITS-90. Continued accuracy of a qualified cell depends upon sustained physical integrity. This may be verified by techniques described in Section 6. The commercially available triple point of water cells described in this standard are capable of achieving an expanded uncertainty (k=2) of between ±0.1 mK and ±0.05 mK, depending upon the method of preparation. Specified measurement procedures shall be followed to achieve these levels of uncertainty.1.1 This guide covers the nature of two commercial water triple-point cells (types A and B, see Fig. 1) and provides a method for preparing the cell to realize the water triple-point and calibrate thermometers. Tests for assuring the integrity of a qualified cell and of cells yet to be qualified are given. Precautions for handling the cell to avoid breakage are also described.1.2 The effect of hydrostatic pressure on the temperature of a water triple-point cell is discussed.1.3 Procedures for adjusting the observed SPRT resistance readings for the effects of self-heating and hydrostatic pressure are described in Appendix X1 and Appendix X2.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.

Standard Guide for Use of Water Triple Point Cells