00000nam 2200000za 4500 9.862870 CaOODSP 20241203113644 cr ||||||||||| 181005s1978 onca #o f000 0 eng d 0-662-10225-8 CaOODSP eng eng fre n-cn--- En36-503/108E-PDF En36-503/108 Miners, K. C. A simple floating mean concentration sampler [electronic resource] / K.C. Miners. Burlington, Ontario : Fisheries and Environment Canada, Inland Waters Directorate : National Water Research Institute : Canada Centre for Inland Waters, 1978. v, 4 p. : ill. Technical bulletin - Inland Waters Directorate ; no. 108 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "The requirement for an inexpensive reliable means of collecting time-integrated, near surface water samples at numerous stations around a point-source effluent, led to the development of an unpowered, moored sampler which could be deployed, serviced, and recovered by hand from a small boat. The sampler consists of a container held at a fixed depth on a ballasted spar. The interior of the container is vented to the atmosphere, and open to the ambient water mass via a nozzle assembly protected by a fine mesh filter. The pressure differential across the nozzle is sufficient to maintain a very small but constant flow into the container, such that sampling periods greater than twelve hours are achieved. By observing the assembly and operational precautions outlined in the text, the configuration described will operate reliably for at least several weeks"--Abstract, p. v. Includes abstract in French. gccst Water pollution gccst Water quality gccst Measurement Canada. Environment Canada. Canada. Fisheries and Environment Canada. Canada. Inland Waters Directorate. Canada Centre for Inland Waters. National Water Research Institute (Canada) Technical bulletin (Canada. Inland Waters Directorate) no. 108. (CaOODSP)9.861123 PDF 858 KB https://publications.gc.ca/collections/collection_2018/eccc/en36-503/En36-503-108-eng.pdf