共找到 150 条与 sampling unit 相关的标准,共 10 页
本标准操作程序(SOP)提供关于地下水井采样的通用信息,并确保所采集的样品能代表正在采样的特定地下水层。过去几年对饮用水中挥发性有机化合物(VOCs)低水平的日益关注,促使开发了高度复杂的分析方法,这些方法可提供万亿分之一的美利体育登录入口官网限。虽然实验室方法极其灵敏且受控并经过质量保证,但它们无法弥补采集不当的样品。样品的采集应像分析程序一样灵敏、高度发达并经过质量保证。这些程序旨在采样最常见的地下水污染物(例如,挥发性和半挥发性有机化合物、农药、除草剂、多氯联苯(PCBs)、金属和生物参数)。这些是标准(即通常适用)的操作程序,可根据现场条件、美利体育官网首页网址限制或程序施加的限制进行调整或更改。在所有情况下,最终采用的程序应予以记录并与最终报告相关联。提及贸易名称或商业产品不构成美国环境保护署(U.S. EPA)的背书或使用推荐。
Standard Operating Procedure for Groundwater Well Sampling
Groundwater Well Sampling Guide
本指南主要适用于具有筛管或开口段长度不超过10英尺且可接受采样美利体育官网首页网址的地下水监测井。这些程序旨在最大限度地减少对含水层的扰动,从而获得最具代表性的地下水样品。该指南适用于大多数场地,但不替代或取代区域和/或项目特定的采样计划。
Ground-Water Sampling Guidelines for Superfund and RCRA Project Managers
Quality Management Systems - Guidelines for the Application of UNIT-ISO 9001:2015 in Healthcare Organizations
Quality management systems. Guidelines for the evaluation of the management system for the sustained success of an organization according to the UNIT-ISO 9004:2009 standard.
Quality Management Systems - Guidelines for the Application of UNIT-ISO 9001:2015 in Hospital Pharmacies
Foods. Hydrovolumetric determination of copper (II) content in an aqueous solution of copper (II) sulfate. For the purposes of UNIT 616 standard.
Fertilizers. Granulated single ammonium superphosphate. General characteristics.
Method for determining the tensile strength of papers and cardboard.
Microbiology. General guide for the enumeration of Clostridium perfringens. Practical method.
Cobre y sus aleaciones. Barras, soleras y perfiles. Requisitos generales.
Sampling for the determination of moisture content in paper pastes, cardboard, and corrugated board.
Steel wires. Winding method.
Paper and cardboard. Determination of surface strength. Accelerated velocity method using the IGT apparatus (pendulum or spring model).
Carbon steel. Sulfuric acid method for the determination of silicon.
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