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Pharmaceutical Manufacturing and Packing Sourcer
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| Jay Whalen at Watson-Marlow Bredel Pumps outlines the latest developments in the arena of pumps for pharmaceutical manufacturers
Whether you work in a laboratory, on a pilot plant or in full-scale production units, there is a strong possibility that at some time you will need to dispense materials accurately from one point to another. Applications as varied as dosing nutrients to fermentation vessels, adding flavourings to foodstuffs, or dosing municipal water supplies with chemicals, all demand levels of accuracy that can only best be met by positive displacement delivery methods. Unlike conventional centrifugal pumps, in which output volumes have to be controlled by flowmeters and valves, positive displacement systems deliver a fixed volume for each cycle of the device irrespective of input or output flow conditions.
This ability to dispense fixed volumes at controllable flow rates is the common feature behind positive displacement devices such as syringe mechanisms, piston pumps, diaphragm pumps, gear and lobe pumps, and peristaltic pumps. But when other factors are also taken into consideration – the need for contamination-free operation in hygienic applications, the accuracy and repeatability of the dose, the ease of operation and maintenance and, perhaps most importantly, the overall cost – then a very strong case can be made for choosing peristaltic pumps above all others.
EASE OF USE AND COST-EFFECTIVENESS
At first sight, a peristaltic pump is simplicity itself. Fluid flows through a flexible tube, which a number of rollers pass over, repeatedly squeezing and releasing the tube. The tube’s restitution or recovery to its normal diameter after its ‘squeeze’ creates a vacuum, which draws more fluid into the tube to be positively displaced by the rollers’ squeezing action. Behind the simplicity, however, lies a sophisticated metering and dosing technology that is proving its worth in a wide variety of applications. |
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EMBALLAGE 2008. World Packaging Exhibition
16-21 November 2008, Paris-Nord Villepinte - France
“Business, Innovation, Outlook” are the watchwords for the 38th World Packaging Exhibition which opens in Paris from 17 to 21 November 2008. Fifteen months before the key packaging event of the end of 2008, EMBALLAGE displays its differences to offer you a new edition that is even more representative, international and rich in new features.
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“PACK DIFFERENT” with EMBALLAGE 2008
“Business, Innovation, Outlook” are the watchwords for the 38th World Packaging Exhibition which opens in Paris from 17 to 21 November 2008. Fifteen months before the key packaging event of the end of 2008, EMBALLAGE displays its differences to offer you a new edition that is even more representative, international and rich in new features.
More info >> |
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