NEWS
June 2009 — Université Laval, Québec, CANADA. Laboratoire régional des sciences aquatiques (LARSA)
Two temperature controlled units (10° to 30° C) for the exposition of fish to cyclical variations in salinity (2 to 32 PSU) were installed last June at the Laboratoire régional des sciences aquatiques (LARSA), Université Laval.
These mirror-image units generate cyclic variations in salinity at a pre-set water temperature. Drs Julie Turgeon and Julian Dudson will be exposing cold water fish to cyclical changes in salinity (2 to 32 PSU).
The salinity level is automatically adjusted from a mix of two stable water sources (freshwater and saltwater). One research unit is dedicated to salinities <15 PSU and the other to salinities > 15 PSU.
The salinity control module consists in a set of electronically controlled valves injecting the required amount of fresh and salt water into a mixing tank connected to the filtration module. The Monitron controller features an advanced mathematical model in addition to an automatically scaled proportional-integral control loop to obtain a very smooth and accurate sinusoidal variation of the salinity.
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October 2008 — Acadia University in Nova-Scotia, CANADA, has inaugurated her new aquatic facility. The wet lab, provided by aquabioLab, features a marine room, a tropical fish and amphibian room, a turtle room and a mechanical room.
AquabioLab is the proud designer of:
- a Closed-circuit Marine System for benthic animals
This wet table is designed to house small invertebrates in individual aquaria. Buckets can be set directly under the air and water outlets as they come from the field. Larger animals or large arrivals are set in the two Swedish tanks.
- a Closed-circuit System for marine fish
In these three insulted tanks, researchers can adjust water temperature, down to 4°C, adjust the level of dissolved oxygen, and precisely regulate the level of make-up water inflow, up to 100% of total volume exchanged per day.
Each tank is equiped with a sediment trap that removes 80% of feacal matter when opening the purge valve.
A cental network linking all individual Monitrons control and monitoring systems alows us to trouble shoot systems at distance.
AQUABIOTECH now exclusive distributor of PEQUITEC instruments in North-America
The company PEQUITEC MSR- SYSTEMES located in Switzerland, is specialized in Dosing and control systems for ecotoxicology research. Its Proportional Diluters and LinDos Diluter systems meet the highest standards asked by industry, institutes and universities.
