closed system


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closed sys·tem

a system in which there is no exchange of material, energy, or information with the environment.

closed system

a system that does not interact with its environment.
References in periodicals archive ?
The Arisure Closed System Transfer device is designed to be easy to use with an emphasis on safety.
The differences between open and closed system models motivate the need for researchers to investigate the performance of devices in either open or closed systems.
The device's closed system operates by using pressure, which forces the sample against the lysis plate in the tubes for low-shear cell disruption.
It will enable Omega Diagnostics to progress with its strategy to develop allergy-based products on an automated closed system platform that will be able to process much higher volumes of tests than the current 'open system' platform acquired with the IVD Business.
In a closed system, the mass may change form, but the amount would remain the same.
The closed system reduces adhesive contamination that can cause nozzle clogging, downtime and associated maintenance.
The researchers exposed each framework to increasing amounts of carbon dioxide gas in a closed system at room temperature.
The new ovens will feature an Advanced Closed System +3 with "Crisp and Tasty," "Press-and-Go" and a dispensing door, which have all been developed by Convotherm.
By pressurizing the rubber bonded gasket in a closed system and then measuring the decline in pressure, it can be determined whether a sealing bead is cracked, crushed or just not present.
SuPure polymers can be unloaded at customer facilities using a closed system called the Flexicon bulk-bag discharger (supplied by Flexicon Corp.
Examining my own fundamentalist faith I came to realize it was a closed system which could not account for the multiplicity and diversity of human experience.
The Opto-Matic Closed System oiler is designed for where a constant level in an oil sump must be maintained.