标准摘要
[中文适用范围]： 本标准规定了以下半定量评价水体透明度的方法： a) 使用透明度测试管测量视程（适用于透明和微浑浊的水体），见第 4 章； b) 使用透明度测试盘测量上层水层的视距（特别适用于地表水、沐浴水、废水，常用于海洋监测），见5.1； c) 潜水员在预定深度测量能见度，见 5.2。 注：ISO 7027-1 中描述了使用光学浊度计或浊度计的定量方法。 [外文原描述]： This document specifies the following semi-quantitative methods for the assessment of transparency of waters: a) measurement of visual range using the transparency testing tube (applicable to transparent and slightly cloudy water), see Clause 4; b) measurement of visual range in the upper water layers using the transparency testing disc (especially applicable to surface, bathing water, waste water and often used in marine monitoring), see 5.1; c) measurement of visibility by divers in a destined depth, see 5.2. NOTE The quantitative methods using optical turbidimeters or nephelometers are described in ISO 7027-1.
英文名称Water quality — Determination of turbidity — Part 2: Semi-quantitative methods for the assessment of transparency of waters