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NY/T 919-2020 饲料中苯并(a)芘的测定 Determination of benzo (a) pyrene in feeds
本标准规定了饲料中苯并(a)芘测定的液相色谱-串联质谱法和高效液相色谱法。<br />本标准中液相色谱-串联质谱法适用于配合饲料、浓缩饲料、精料补充料、添加剂预混合饲料和饲料原料(硅铝酸盐等具有吸附性的矿物质饲料原料和油脂除外)中苯并(a)芘的测定,检出限为0.5μg/kg,定量限为1.0μg/kg。<br />本标准中高效液相色谱法适用于配合饲料、浓缩饲料、精料补充料和添加剂预混合饲料中苯并(a)芘的测定,检出限为0.5μg/kg,定'限为1.0μg/kg。...
2023-12-21 02:24:02浏览:7
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SN/T 4779.1-2017 出口瓶装水中氟的测定 流动注射离子选择电极法 Determination of fluoride in bottled water for export-Method by ion selective electrode flow injection analysis
SN/T4779的本部分规定了瓶装水中氟含量的流动注射离子选择电极法的检测方法。<br />本部分适用于瓶装饮用水和瓶装饮用天然矿泉水中氟含量的测定。...
2023-12-21 02:12:01浏览:9
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YS/T 1179.2-2017 铝渣化学分析方法 第2部分:金属铝含量的测定 气体容量法 Chemical analysis methods of aluminum slag- Part 2: Determination of metal aluminum- Gasometric method
本部分规定了炼钢脱氧用铝渣中金属铝含量的测定方法。<br />本部分适用于铝渣中金属铝含量的测定,测定范围(质量分数):5.00%~35.00%。...
2023-12-20 23:48:01浏览:9
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ISO 6270-3-2018 色漆和清漆--耐湿测定--第3部分:冷凝(暴露在加热柜内、冒泡的贮水池) Paints and varnishes — Determination of resistance to humidity — Part 3: Condensation (in-cabinet exposure with heated, bubbling water reservoir)
This document specifies the general conditions and procedures to be observed when testing coated test specimens in constant condensation water atmospheres in order to ensure that the results of tests carried out in different laboratories are reproducible.<br />NOTE The shape and preparation of the test specimens, the duration of the test and the assessment of the test results are not covered in this document....
2023-12-17 15:36:02浏览:10
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YS/T 1131-2016 烧结金属多孔材料 抗弯性能的测定 Sintered metal porous materials-Determination of bending performance
本标准规定了烧结金属多孔材料抗弯性能的检测方法。<br />本标准适用于粉末冶金方法生产的片状或板状烧结金属多孔材料,包括烧结金属纤维多孔材料、烧结金属粉末多孔材料及金属泡沫材料,不适用于烧结金属多孔管材和致密金属材料。...
2023-12-17 04:48:02浏览:10
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YY/T 0809.13-2020 外科植入物 部分和全髋关节假体 第13部分:带柄股骨部件头部固定抗扭转力矩的测定 Implants for surgery-Partial and total hip joint prostheses- Part 13: Determination of resistance to torque of head fixation of stemmed femoral components
YY/T0809的本部分规定了在特定的实验室条件下侧定使fit关节假体股骨球头的固定发生松脱(在僦关节假体中球头预期相对于颈部不能旋转)所需扭矩的方法。<br />本部分适用于部分或全髋关节假体的股骨部件,其中股骨球头和股骨颈/柄(在下文中称为锥体)通过圆锥锁定或其他方式固定在一起,其中股骨球头和锥体是独立的部件,它们由金属或非金属材料制成。<br />本部分不包括检查试样的方法;试样检查应由测试实验室和试样提供方协商。...
2023-12-17 04:36:02浏览:14
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QB/T 5712-2022 发酵液中L-乳酸的测定 酶电极法 Determination of L-lactate in fermentation enzyme-Electrode method
本文件描述了酶电极法测定发酵液中L-乳酸的原理、试剂和溶液、仪器和设备、试样制备和分析步骤。<br />本文件适用于L-乳酸发酵生产过程中L一乳酸的快速测定。<br />本文件的定量限为0.01g/L。...
2023-12-17 00:48:01浏览:7
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NF P18-441-17-2019 Testing hardened concrete - Part 17 : determination of creep of concrete in compression
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2023-12-13 15:12:01浏览:8
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ISO 587-2020 煤和焦炭--用埃施卡混合物测定氯 Coal and coke — Determination of chlorine using Eschka mixture
This document specifies a method of determining the chlorine content of hard coal, brown coals and lignites, and coke using Eschka mixture....
2023-12-13 14:48:01浏览:14
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ISO 17075-1-2017 皮革--皮革中铬(VI)含量化学测--第1部分:比色法 Leather — Chemical determination of chromium(VI) content in leather — Part 1: Colorimetric method
This document specifies a method for determining chromium(VI) in solutions leached from leather under defined conditions. The method described is suitable to quantify the chromium(VI) content in leathers down to 3 mg/kg. This document is applicable to all leather types. The results obtained from this method are strictly dependent on the extraction conditions. Results obtained by using other extraction procedures (extraction solution, pH, extraction time, etc.) are not comparable with the results produced by the procedure described in this document. If a leather sample is tested with both this document and ISO 17075-2, the results obtained with ISO 17075-2 are considered as the reference. The advantage of the method described in ISO 17075-2 is that there are no interferences from the colour of the extract. Nevertheless, interlaboratory trials do not show significant differences (see Annex C) and the results are comparable between both methods....
2023-12-13 10:36:02浏览:7
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ISO 12900-2018 硬煤--磨损度的测定 Hard coal - Determination of abrasiveness
This document describes a method for determining the abrasiveness of hard coal....
2023-12-13 09:48:01浏览:8
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IEC TR 62669-2019 支持IEC 62232的案例研究--在无线电通信基站附近用于评估人体所受电磁辐射的射频场强、功率密度和比吸收率(SAR)的测定 Case studies supporting IEC 62232 – Determination of RF field strength, power density and SAR in the vicinity of radiocommunication base stations for the purpose of ev
This document, which is a Technical Report, presents a series of case studies in which electromagnetic (EM) fields are evaluated in accordance with IEC 62232:2017. The case studies presented in this document involve intentionally radiating base stations (BS). The BS transmit on one or more antennas using one or more frequencies in the range 110 MHz to 100 GHz and RF exposure assessments take into account the contribution of ambient sources at least in the 100 kHz to 300 GHz frequency range. Each case study has been chosen to illustrate a typical BS evaluation scenario and employs the methods detailed in IEC 62232:2017. The case studies are provided for guidance only and are not a substitute for a thorough understanding of the requirements of IEC 62232:2017. Based on the lessons learned from each case study, recommendations about RF assessment topics to be considered in the next revision of IEC 62232 are proposed. The methodologies and approaches described in this document are useful for the assessment of early 5G products introduced for consumer trials or deployments. <br />This document provides background and rationale for applying a compliance approach based on the actual maximum transmitted power or EIRP. Guidance for collecting and analysing information about the transmitted power of a base station and evaluating its actual maximum RF exposure based on modelling studies or measurement studies on operational sites (in networks, sub-networks or field trials) is also presented....
2023-12-13 09:36:07浏览:9
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NF ISO 2403-2019 Textiles - Cotton fibres - Determination of micronaire value
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2023-12-13 08:48:02浏览:8
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