Aquatic Research Instruments (ARI) products

Quantitative plankton analysis. Vertical and horizontal towing applications.

Heavy duty Nitex® nylon net available in most mesh sizes (see current price list for available sizes); mouth to length ratios: 1:3, 1:4, 1:5 or 1:6; nets include a brass ring choke band (except Puget Sound Net)

Ichthyoplankton and zooplankton production studies. Oblique and vertical towing applications. Spatially correlated plankton studies.

Thin-layer sampling of: physical (temperature), chemical (dissolved gasses, nutrients, metals) and biological ,  phytobacterioplankton) data

General purpose water sampling of: physical (temperature), chemical (dissolved gasses, nutrients, metals) and biological (photozooplankton) data

Sample tubes are vertically oriented to "free-flush" until desired depth is reached. The release mechanism provides reliable messenger activated sampler closure. Balls are loaded separately and held open during deployment by a spring-loaded release pin. A second, tethered, messenger can also be attached to the release mechanism. When a messenger sliding down the line impacts the anvil of the release pin, the balls (under tension of a latex band) are released and pulled inside tube brushings while the suspended messenger is released actuating the closure of deeper bottles, attached to the same line, for serial ("in-series") collection of water at various depths. These sampling cylinders are constructed using clear polycarbonate tubing which has considerably higher impact resistance than materials used in other similar type samplers. A liquid-spirit filled, armored thermometer is mounted inside the sample tube for instant temperature measurement.

Paleoecological analysis. Simple one-moving part “check valve assembly” seals automatically. Collects beautiful undisturbed cores of mud-water interface.

Paleoecological analysis. Deep water sediments. Benthic community analysis. Undisturbed collection of mud-water interface.

Paleoecological analysis of bog and salt marsh sediments. Collection of uncompressed cores in poorly decomposed woody peat. Shallow water applications.

Paleoecological analysis. Lightweight piston sampler for soft lake deposits. Long (2.0m long/drive), undisturbed cores of sediment- water interface from shallow lakes. Ideal sampler for gyttja, clay, and fine sand sediments.