Van Dorn sampler

[van ′dȯrn ‚sam·plər]

(engineering)

A sediment sampler that consists of a Plexiglas cylinder closed at both ends by rubber force cups; in the armed position the cups are pulled outside the cylinder and restrained by a releasing mechanism, and after the sample is taken, a length of surgical rubber tubing connecting the cups is sufficiently prestressed to permit the force cups to retain the sample in the cylinder.

References in periodicals archive

Samples were collected at 16 sites distributed across 3 zones of the reservoir monthly in April, May, June, and July of 2007 using a 2.2 L Van Dorn sampler. Samples were collected at depths of 1, 4, and 7 meters, poured through an 80-[micro]m filter, preserved, and identified to the lowest possible taxa.

Distribution of zooplankton in Harlan County Reservoir, Nebraska

(1978) Phytoplankton van Dorn sampler -- -- Zooplankton -- -- Water pump (200 L; 68 [micro]m net) Data Matsumura- Mitamura & LTER-Brazil Tundisi Hino (1997) site #4 (1997) Period July/1983 Nov.-Dec.

Limnological changes in Dom Helvecio Lake (South-East Brazil): natural and anthropogenic causes/Mudancas limnologicas no lago Dom Helvecio (Sudeste Brasil): causas naturais e antropogenicas

Temperature Salinity YSI or Hach meters for conducti- vity, temperature, and salinity Water Sample Collection for Van Dorn sampler and/or wading Laboratory Analysis for field grab sampling Nitrate Nitrogen Hach Spectrophotometer DR 2010 Total Phosphorus Hach Spectrophotometer DR 2010 pH Hach Sension pH meter

Hands-on water related education through water quality monitoring

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