What is ISO 3716 - Features and functions of suspended-sediment samplers about?
ISO 3716 specifies the functional requirements and characteristics of the different types of suspended-sediment samplers used for collecting water-sediment mixtures from streams, rivers, lakes, and reservoirs.
Factors such as availability, cost, and specific requirements of the sampling also influence the choice of the sampler to a great extent. The different types of samplers include open containers, vertical and horizontal cylinders, bottle samplers, pumping samplers, single-stage samplers, point-integrating samplers, and depth-integrating samplers.
NOTE 1: ISO 3716 does not include equipment for collecting samples in closed conduits and wastewater discharges.
NOTE 2: The units of measurement used in ISO 3716 are SI units.
Who is ISO 3716 - Features and functions of suspended-sediment samplers for?
ISO 3716 on the Functional requirements and characteristics of the suspended-sediment sampler is beneficial for:
- Hydrologists
- People studying hydrology
Why should you use ISO 3716- Features and functions of suspended-sediment samplers?
Suspended-sediment samplers are used to collect a representative sample of the water-sediment mixture of streams, rivers, lakes, and reservoirs. Ideally, the sampler should be able to collect samples that represent the mean concentration of suspended sediment or define the horizontal and vertical variation of suspended-sediment concentration so that the mean concentration can be determined.
ISO 3716 is useful since it covers the various types of samplers available for collecting suspended sediment, some suitable for sampling lakes and reservoirs, others for streams and rivers. Lakes and reservoirs use open containers, vertical and horizontal cylinders, bottle samplers, and pumping samplers. Stream and river samplers include point-integrating, depth-integrating, single-stage, and pumping samplers. Isokinetic samplers can only capture representative samples of suspended sand-size particles in streams and rivers. Some samplers can also gather clean (uncontaminated) samples of trace metals and organic compounds found in suspended silt in streams and rivers.Sediment samplers are flow resistant and only stable at low speeds. Rarely can samples be taken near the streambed. Those samplers that cannot be sealed at the sampling point have a high risk of intermixing with the river water-sediment mixture.
Overall, ISO 3716 is helpful as it provides functional requirements and characteristics of suspended-sediment samplers which can be beneficial for your business.
What’s changed since the last update?
BS ISO 3716:2021 supersedes DD ISO/TS 3716:2006, which is withdrawn.
BS ISO 3716:2021 cancels and replaces the first edition (ISO/TS 3716:2006), which has been technically revised. The main changes compared with the previous edition are as follows:
- The Scope has been clarified to include samplers for collecting water-sediment mixtures of rivers, streams, lakes, and reservoirs and exclude equipment for sampling closed conduits and wastewater discharges
- Clauses on sampling techniques have been removed
- The types and models of samplers have been expanded