71.040.20 实验室器皿和有关仪器 标准查询与下载



共找到 902 条与 实验室器皿和有关仪器 相关的标准,共 61

1.1 This specification covers volumetric pipets of two classes. Class A, Precision Pipet and Class B, General Purpose. NOTE 1—Specifications for micropipets are given in Specification E193. 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. 1.3 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.

Standard Specification for Glass Volumetric (Transfer) Pipets

ICS
71.040.20
CCS
发布
2019-07-01
实施

1.1 This specification covers two types of filter paper for use in chemical analysis and provides procedures for the complete evaluation of the filter papers. 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 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.

Standard Specification for Laboratory Filter Papers

ICS
71.040.20
CCS
发布
2019-07-01
实施

1.1 This specification covers requirements for glass burets of precision and general-purpose grades suitable for laboratory use. 1.1.1 Class A—Each buret of precision grade may be marked with the letter “A” to signify compliance with applicable construction and accuracy requirements in Table 1 and Table 2. Each buret may be marked with a permanent serial number at the option of the manufacturer. 1.1.2 Class B—General purpose burets are of the same basic design as Class A burets. However, volumetric tolerances for Class B burets shall be within twice the specified range allowed for Class A burets. These burets need not be marked with their class designation or serial number. See Table 1 and Table 3 for tolerances and dimensional requirements. NOTE 1—The Twelfth General (International) Conference on Weights and Measures redefined the litre as a “special name for the cubic decimetre,” but agreed to permit continuance of the terms litre, millilitre, and mL, except in association with measurements of the highest precision. For volumetric glassware the difference between the old and new meanings of litre is negligible. Therefore, either mL or cm3 may be marked on ware covered by this standard. 1.1.3 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. 1.2 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.

Standard Specification for Laboratory Glass Graduated Burets

ICS
71.040.20
CCS
发布
2019-07-01
实施

1.1 This specification covers requirements for glass volumetric flasks of precision grades suitable for laboratory purposes and of specialty use. Each flask shall be marked with the letter “A” to signify compliance with applicable construction and accuracy requirements. Flasks may be marked with an identification number (serial number) at the option of the manufacturer. NOTE 1—Specifications for standard volumetric flasks are given in Specification E288. NOTE 2—Specifications for microvolumetric flasks in sizes from 1 to 25 mL are given in Specification E237. 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 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.

Standard Specification for Laboratory Glass Volumetric Flasks, Special Use

ICS
71.040.20
CCS
发布
2019-07-01
实施

1.1 This specification covers the requirements for autoclavable protective coatings on laboratory glassware up to and including the 4L size. These coatings will not prevent the escape of liquids from vessels under pressure. 1.2 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.

Standard Specification for Autoclavable Protective Coatings on Laboratory Glassware

ICS
71.040.20
CCS
发布
2019-07-01
实施

1.1 This specification provides standard dimensional requirements for glass conical flasks suitable for general laboratory use. NOTE 1—For packaging standards, choose the following standards; E920, E921, and E1133. 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 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.

Standard Specification for Laboratory Glass Conical Flasks

ICS
71.040.20
CCS
发布
2019-07-01
实施

1.1 This specification provides standard dimensional requirements for flat-bottom and round-bottom glass boiling flasks. NOTE 1—For packaging standards, choose among the following standards, E920, E921, E1133, and E1157. 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 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.

Standard Specification for Laboratory Glass Boiling Flasks

ICS
71.040.20
CCS
发布
2019-07-01
实施

4 要求  4.1 仪器应按照规定程序批准的图纸及技术文件制造,并符合本标准的规定。  4.2 外观 4.2.1 仪器表面应平整光滑,文字和标志清晰、完整; 4.2.2 仪器外壳应无损伤、变形等明显缺陷;  4.2.3 仪器及附件的所有紧固件应紧固良好,外部零件结合处应整齐,仪器的运动部件应能平稳运动。  4.3 技术指标   4.3.1 技术指标应符合表1规定                                      表1  技术指标 项目                                      技术指标                          液体进样           固体进样 稳定性/(%)                        ≤2.0 检出限                ≤0.0005μg/L   ≤0.005ng 相对标准偏差(%) ≤2.0                   ≤5.0 相关系数                ≥0.997           ≥0.995 4.4 安全要求  4.4.1 绝缘电阻  仪器相线、中线与机壳之间的绝缘电阻应不小于20MΩ,接地良好。  4.4.2 泄漏电流  仪器的泄漏电流应不大于5mA。 5 试验方法  5.1 外观     目测和手感检查,应符合4.2规定。 5.2 技术指标 5.2.1 实验条件 5.2.1.1环境条件     应满足本标准3.1~3.6规定的工作条件要求。 5.2.1.2 测试样品 采用二次去离子水和分析纯的试剂制备,对溶液有怀疑时,可用国家标准物质(证书)和高精度分析仪器测定或化学法旁证; 固体测试样品采用土壤成分分析国家标准物质GBW07402(GSS-2)。 5.2.1.3 试剂、材料与设备  a)高强度空心阴极灯:Hg元素灯; b)秒表:分度值不大于0.1s; c)兆欧表: 500V绝缘电阻表; d)耐压测试仪:1.5kV,5mA; e)万用表:0V~300V;  f)检定用试剂:详见附录A; g)A级玻璃器皿:100ml、200ml、1000ml容量瓶数个,5ml、10ml、20ml单标线分度吸管数支; h)天平:最大量程100g,分度值应不大于0.0001g。 5.2.1.4 仪器工作条件 灯电流:10 mA ~40mA; 负高压:280V~500V。 固体样品测量时,裂解炉工作温度:                   a 温度范围为50~900℃,监测,可调;  b 炉温在750℃,指示误差不大于±2%。 5.2.2  稳定性的试验 仪器按照说明书的规定程序开机,仪器及高强度空心阴极灯在测定条件下预热30分钟,调零,将模拟信号的荧光强度初始值设定为500±50左右,每隔30秒测定一次,连续测量30分钟,将测定结果取其最大值和最小值。计算出静态基线漂移。 5.2.3  检出限和工作曲线的测定  5.2.3.1 液体进样 仪器按照说明书的规定程序开机,仪器及高强度空心阴极灯在测定条件下预热30分钟,用硼氢化钠(或硼氢化钾)作还原剂,分别对空白溶液和表A.1中跨2个数量级的标准混合溶液进行3次重复测定,取算术平均值后,按线性回归法求出工作曲线的斜率b和相关系数r。  在与上述完全相同的条件下,对空白溶液连续进行11次荧光强度测量,求出其标准偏差S0; 计算检出限DL。其结果应符合表1的规定。  5.2.3.2 固体进样 仪器按照说明书的规定程序开机,仪器及高强度空心阴极灯在测定条件下预热30分钟,采用土壤成分分析国家标准物质GBW07402(GSS-2)作为固体标准,分别称取了0.0100g,0.0200g,0.0500g,0.1000,0.1500,0.2000g,进行线性实验,采用3次重复测定,取算术平均值后,按线性回归法求出工作曲线的斜率b和相关系数r。 在与上述完全相同的条件下,对空瓷舟连续进行11次测量,求出其标准偏差S0; 及检出限DL。其结果应符合表1的规定。  5.2.4 相对标准偏差的测定  5.2.4.1 液体进样 仪器按照说明书的规定程序开机,仪器及高强度空心阴极灯在测定条件下预热30分钟,对汞元素标准溶液质量浓度连续进行7次重复测量。计算出相对标准偏差(RSD)。 其结果应符合表1的规定。  5.2.4.2 固体进样 仪器按照说明书的规定程序开机,仪器及高强度空心阴极灯在测定条件下预热30分钟,用天平称取0.1000g国家标准物质GBW07402,对标准物质连续进行7次重复测量汞含量。计算出相对标准偏差(RSD),其结果应符合表1的规定。  5.2.5 电源电压变化影响  仪器在正常测量条件下,调节模拟荧光信号值在500±50,用0.5 kVA调压变压器改变输入电压220 V±22 V,记录仪器的示值变化。  5.3  安全 5.3.1  绝缘电阻  仪器处于非工作状态下,电源开关置于接通位置,用500 V兆欧表测量仪器相线、中线与仪器外壳间的绝缘电阻,其结果应符合4.4.1的规定。  5.3.2 泄漏电流  试验中不应发生闪络或击穿现象。 将仪器放在绝缘的工作台上,仪器处于非工作状态下,电源开关处于接通状态下,耐压测试仪电压输出线接仪器电源输入端,地线接仪器外壳,漏电流选择5mA ,旋转升压旋钮,使试验电压逐渐升到1.5kV,在此电压下保持1分钟,然后平稳下降到零。 其结果应符合4.4.2的规定。

Universal Atomic fluorescence mercury analyzer

ICS
71.040.20
CCS
C401
发布
2019-05-06
实施
2019-05-06

Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-010: Particular requirements for laboratory equipment for the heating of materials

ICS
71.040.20
CCS
发布
2019-02-12
实施

Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-010: Particular requirements for laboratory equipment for the heating of materials

ICS
71.040.20
CCS
发布
2019-02-12
实施

1.1 The specification provides standard dimensional requirements for obtaining, within practical limits, interchangeability in stopcocks and stoppers for ordinary laboratory and industrial applications. It covers dimensional interchangeability of the ground surfaces only and does not involve design characteristics of the item except where specified. NOTE 1—The dimensions pertaining to stopcocks and stoppers were taken from the Commercial Standard CS 21 of the U.S. Department of Commerce. NOTE 2—Although glass is the most commonly used material for stopcocks and stoppers, other materials may be used as specified. Stopcocks and stoppers constructed from glass should conform to Specifications E438 and E671. 1.2 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.

Standard Specification for Interchangeable Taper-Ground Stopcocks And Stoppers

ICS
71.040.20
CCS
发布
2019-01-01
实施

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. 1.3 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.

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

ICS
71.040.20
CCS
发布
2019-01-01
实施

1.1 This specification covers requirements for glass measuring pipets of precision and general purpose grades, used in measuring volumes of liquids. 1.2 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.

Standard Specification for Glass Measuring Pipets

ICS
71.040.20
CCS
发布
2019-01-01
实施

1.1 This specification covers designations, dimensions, and tolerances for only the ground surfaces of interchangeable taper-ground joints for laboratory and industrial equipment in full-length, medium-length, short-length, and internationallength (ISO K-6 series) grindings. NOTE 1—The dimensions pertaining to full-length, medium-length, and short-length joints, other than for the tolerance on length of grind, were taken directly from the now obsolete Commercial Standard CS 21. NOTE 2—Tolerances on the diameters of the international-length joints do not agree with those given in ISO Recommendation R 383. These tolerances have been established to agree with those of CS 21 in order to prevent the negative projection (large end of inner joint being smaller than large end of outer joint) permitted by ISO. NOTE 3—Although glass is the most commonly used material for ground joints, other materials may be used as specified. Taper-ground joints constructed from glass should be of suitable chemical and thermal properties in accordance with Specification E438. Joints should be as free as possible of visible defects and conform to Specification E671. 1.2 The following precautionary caveat pertains only to the Test Method portion, Section 4, of this specification. 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. 1.3 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.

Standard Specification for Interchangeable Taper-Ground Joints

ICS
71.040.20
CCS
发布
2019-01-01
实施

1.1 This specification covers requirements for glass graduated cylinders for precision and general purpose grades suitable for laboratory purposes. 1.1.1 Class A—Each cylinder of precision grade shall be marked with the letter “A” to signify compliance with applicable construction and accuracy requirements. Cylinders may be marked with an identification number (serial number) at the option of the manufacturer. 1.1.2 Class B—General purpose cylinders are of the same basic design as Class A cylinders. However, volumetric tolerances for Class B cylinders shall be within twice the specified range allowed for Class A cylinders. These cylinders need not be marked with their class designation. 1.1.3 Product with a stated capacity not listed in this standard may be specified in Class A tolerance when product conforms to the tolerance range of the next smaller volumetric standard product listed in Table 1. 1.2 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.

Standard Specification for Laboratory Glass Graduated Cylinders

ICS
71.040.20
CCS
发布
2019-01-01
实施

Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-051: Particular requirements for laboratory equipment for mixing and stirring

ICS
71.040.20
CCS
发布
2018-10-05
实施

1.1 This specification covers weights and mass standards used in laboratories, specifically classes 000, 00, 0, 1, 2, 3, 4, 5, 6, and 7. This specification replaces National Bureau of Standards Circular 547, Section 1, which is out of print. 1.2 This specification and calibration method is intended for use by weight manufacturers, national metrology institutes, weight calibration laboratories, accreditation bodies, users of weights, and regulatory bodies. 1.3 This specification contains the principal physical characteristics and metrological requirements for weights that are used. 1.3.1 For the verification of weighing instruments; 1.3.2 For the calibration of weights of a lower class of accuracy; and 1.3.3 With weighing instruments. 1.4 Maximum Permissible Errors (formerly tolerances) and design restrictions for each class are described in order that both individual weights or sets of weights can be chosen for appropriate applications. 1.5 Weight manufacturers must be able to provide evidence that all new weights comply with specifications in this standard (for example, material, density, magnetism, surface finish, mass values, uncertainties). Statements of compliance by calibration laboratories during subsequent calibrations must meet the requirements of ISO/IEC 17025, 5.10.4.2 and indicate on the calibration report which sections have or have not been assessed. Subsequent calibrations must meet all the requirements (including environmental parameters as shown in Table 11, of Sections 7, 8, and 9; and the requirements of ISO/IEC 17025:2005, 5.10.4.2 to make any claim of compliance to Specification E617, Maximum Permissible Errors, weight classes, or metrological traceability. 1.6 The values stated in SI units are to be regarded as standard. 1.7 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.

Standard Specification for Laboratory Weights and Precision Mass Standards

ICS
71.040.20
CCS
发布
2018-10-01
实施

Safety requirements for electrical equipment for measurement, control and laboratory use - Part 2-061: Particular requirements for laboratory atomic spectrometers with thermal atomization and ionizati

ICS
71.040.20
CCS
发布
2018-09-21
实施

1.1 This specification covers general requirements common to glass volumetric apparatus. Specific dimensions and tolerances for applicable instruments are given in other specifications as cited throughout this specification. Glass must conform to Specifications E438 and be calibrated in accordance with Practice E542. 1.1.1 Class A—Each instrument shall be marked with the letter A to signify compliance with applicable construction and accuracy requirements. Instruments may be marked with an identification marker (serial number) at the option of the manufacturer. 1.1.2 Class B—General purpose instruments are of the same basic design as Class A. However, volumetric tolerances for Class B instruments shall be within twice the specified range allowed for Class A unless otherwise specified. 1.2 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.

Standard Specification for Laboratory Glass Volumetric Apparatus

ICS
71.040.20
CCS
发布
2018-01-01
实施

1.1 This specification covers apparatus used in Test Method D95 and other similar ASTM test methods. 1.2 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.

Standard Specification for Apparatus for Determination of Water by Distillation

ICS
71.040.20
CCS
发布
2018-01-01
实施



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