What does a water sampler do?
A water, wastewater and stormwater sampler collects water for analysis in a laboratory. Automated samplers, such as those offered by Teledyne ISCO, can be programmed to retrieve a set amount of water on an event-based basis (when it rains, when the water reaches a certain height or flow rate) or on a specified schedule (hourly, daily, etc.). ISCO samplers also can be triggered by connected sensors, such as a flowmeter or rain gauge.
What instrument is used for water sampling?
A water, wastewater and storm water sampler can be as simple as a ladle placed by hand in a stream. This is impractical, as collecting an appreciable number of samples takes multiple site visits to what in some instances can be dangerous locations. The man-hours involved in collecting samples by hand also make it more costly in the long run than using an auto-sampler, such as those provided by Teledyne ISCO. An automated water, wastewater and storm water sampler can be programmed to collect a single or multiple samples in a day, based on how they’re programmed, with a single site visit to retrieve multiple samples.
What are the methods of water sampling?
Basically, there are two ways of collecting samples: grab sampling (sequential sampling) and composite sampling. With grab sampling using a water, wastewater or storm water sampler, a single sample is deposited in a container. In composite sampling, multiple samples are placed in a single container. In both instances, a sample is taken either when triggered by an event, such as when the current reaches a certain speed, when rain falls, the water reaches a certain height, or on a time-based schedule.
